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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 79801. |
94. Before 7 years, the ratio of ages of A and Bwas 3:4. After 9 years, ratio of their ages will be7:8. The present age of B will be(A) 16 years(B) 19 years(C) 28 years(D) 23 years |
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Answer» Let the ages of A and B before 7 yr were 3x yr and 4x yr, respectively. Present age of A = 3x + 7 and present age of B = 4x + 7 Now, according to the question, 3x+7+94x+7+9=783x+7+94x+7+9=78 24x + 128 =28x + 112 4x = 16 x = 4 Hence, present age of B = 4 x 4+ 7 = 16 + 7= 23yr |
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| 79802. |
137. The average age of 9 students and their teacher is 16 year. The averageage of the first four students is 19 years and that of the last five is 10years. The teacher's age is-(a) 36 years (b) 34 years (c) 30 years (d) 28 years Ans.(b) |
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Answer» then last five is 10 years the teacher's age is 36 the teacher's age is 34 |
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| 79803. |
Using suitable identity find 103 x 107 |
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Answer» (100+3)×(100+7) = (100)^2 + 100 (3+7) + (3×7) = 10000 + 1000 + 21 = 11021 FORMULA - (x)^2 + x (a+b) + (a×b) |
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| 79804. |
16. Evaluate (998)3 using suitable identities. |
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| 79805. |
22.Thefollowingtable gives the life time of 400 neon lampsLife time300-400400-500 500-600 600-700 700-800 800-900 900-1000(in hours)Number oflamps14566086746248A bulb is selected at random. Find the probability that the life time of the selected bulb is:0) less than 400(i) between 300 to 800 hoursCi) at least 700 hours |
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Answer» thank you very much bhaiya |
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| 79806. |
15. find thĂŠ present.priice of the motor cycle, if it costs 84000 two years ago and its value is depreciatingat the rate of 4% per annum16XThe population of a city doubles itself in 5 years. In how many years will it become 8 times of itself? |
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Answer» 15 is no correct |
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| 79807. |
x ^ { 2 } + \frac { 1 } { x ^ { 2 } } = 102 , \text { find } \text { the value of } x ^ { 3 } - \frac { 1 } { x ^ { 3 } } |
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Answer» lmp |
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| 79808. |
.Thearea of a thombus is 102 cm and its perimeter is 48 cm. Find the distance of s side ohombus from its opposite side |
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| 79809. |
a total of 411 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student tickets sold was two times the number of adult tickets sold. hHow many adult tickets were sold |
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Answer» Let the number of adult tickets be X.then number of student tickets is 2X as it is twice that of adult tickets.Now,total tickets=411so,X+2X=4113X=411X=137So total number of adult tickets sold is 137. Is that a 12 th grade question?? |
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| 79810. |
1. A car costs6.00.000. If it depreciates in value, 15% inthe first year, 13.5% in the next year and 12% in the thirdyear, and so on. What will be its value at the end of 10years, all percentage applying to the original cost ? |
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| 79811. |
Using identities evaluate:1 .71² 2.99² |
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Answer» use (a+b)² = a² + b² + 2ab71²(70+1)² = 70² + 1² + 140 = 4900 + 141 = 5401 Use (a-b)² = a² + b² - 2ab2.99²(3 - 0.01)² = 3² + (0.01)² - 0.06 = 8.9401 |
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| 79812. |
6". Some tickets of t 200 and some of t 100, of a drama in a theatre were sol,dore than the number of ticketsThe number of tickets of t 200 sold was 20 mR100. The total amount received by the theatre by sale of tickets was im37000. Find the number of t 100 tickets sold. |
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Answer» Like if you find it useful skin is the answer of above question |
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| 79813. |
Example 7 The income of a person is Rs. 3,00,000, in the first year and he receives anincrease of Rs.10,000 to his income per year for the next 19 years. Find the totalamount, he received in 20 years |
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| 79814. |
9. The HCF of 2472, 1284 and a third number 'N' is12. If their LCM is 2^3 x 3^2 x 5^1 x 103 x 107, thenthe number 'N' could be:(a) 2^2 x 3^2 x 7^1(c) 2^2x 3^2 x 5^1(b) 2^2 x 3^3 x 103(d) of these |
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| 79815. |
factories the following polynomial using the suitable identities x^2/4+2x+4 |
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| 79816. |
ofxandThe median of the following data is 525. Find the valuesfrequency is 100.8.FrequencyClass Interval0-100100-200200-300300-400400-500500-600600-700700-800800-900900-100051217204 |
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| 79817. |
The median of the following data is 525. Find the values of x and y, if the totalfrequency is 100.FrequencyClass interval0 100100 200200 - 300300 - 400400- 500500- 600600 700700 800800 900900 10002121720974 |
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| 79818. |
owing data indicates the marks of 53 students in Mathematics. Theg data is 525. Find the value of X and Y if the total frequency is 10frequency2Class interval0-100100-200200-300300-400400-500500-600600-700700-800800-900900-10001217207 |
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| 79819. |
The fair of 3 full tickets and 2 half tickets is Rs 204 and the fair of 2 full tickets and 3 halftickets is Rs 186. Then the fair of a full ticket and a half ticket is:(A) Rs 94(C) Rs 86(B) Rs 78(D) Rs 62 |
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Answer» 3f+2h=204.....*2==6f+4h=4082f+3h=186.....*3==6f+9h=558subtracting both the equations-5h=-150h=30put in equation 13f+60=2043f=144f=48 |
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| 79820. |
v35. If 308 tickets are sold for the8. For a particular show in a circus, each ticket costsshow, how much amount has been collected?2EX |
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Answer» thanks |
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| 79821. |
(e) Hari earns() Nita's doll costs 243. Raghu's remote-controlled car costs 4 times as much as thedoes Raghu' cor cosa do for tickets at the zoo. If l ticket was for8, how |
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| 79822. |
Wr6*. Some tickets of t 200 and some of t 100, of a drama in a theatre wereThe number of tickets of t 200 sold was 20 more than the number of tcaof 100. The total amount received by the theatre by sale of ticketsr 37000. Find the number of t 100 tickets sold. |
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Answer» Let number of Rs 100 tickets = nThen number of Rs 200 tickets = n + 20 According to given condition 100n + 200(n + 20) = 37000n + 2n + 40 = 3703n = 370 - 403n = 330n = 330/3 = 110 Number of Rs 100 tickets = 110 |
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| 79823. |
सीरकह जमीन के साई 6 डिग्री का कोण बनाती है। दीवार से सोदी के। एक हीटर बी सी एपैसे की शैय की दूरी तक |
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Answer» A right angle ∆ is formedHypotenuse = height of ladder = 20 mlet the distance between ladder foot & wall is X m X/20 = cos60°X = 20×cos60°X = 20×1/2 = 10m |
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| 79824. |
6". Some tickets of 200 and some of 100. of a drama in a theatre were soldThe number of tickets of ? 200 sold was 20 more than the number of ticketof 100. The total amount received by the theatre by sale of tickets wa37000. Find the number of t 100 tickets sold(iv) |
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Answer» (x+20)200+x100=37000(x+20)200+ x×100= 37000200x+ 4000+ x ×100=37000300x= 37000-4000300x = 33000x= 110 Number of tickets whose cost is 100= 110 Number of tickets whose cost is 200= 120 |
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| 79825. |
6(5x+2. Using identities, find the value o(2) 102/103 (6) 52 47(6) 8/97 (d) (39)(e) (54)(i) (78)(2) (999)(h) (103)(1) (7,5%3. (sinde |
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Answer» a) (100+2) (100+3) b) (50+2). (50-3) c) (100-2) (100-3) d) (40-1)² e) (50+4)² f) (80-2)² g) (1000-1)² h) (100-3)²is the best answer |
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| 79826. |
ات7. Valuate the following using suitable identities:(ii) (102)(39)(ii) (998) |
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| 79827. |
factories the following using suitable identities x square + 6 x +9 |
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Answer» x² + 6x + 9 (x)² + 2 × (x) × 3 + 3² Compare with a² +2ab + b² = (a+b)² we get (x)² + 2 × (x) × 3 + 3² = ( x + 3)² Hit like and BeScholr |
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| 79828. |
7.Evaluate the following using suitable identities:(99)aroon?(i") (102)(j) |
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| 79829. |
23) A bag of rice weighs 60 kg. How muchwill it weigh after 45% of the rice isconsumed? (Neglect the weight of thematerial of the bag.) |
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| 79830. |
24. Mr. Sharma and Mr. Arora are family friends and they decided to go for a trip with familyFor the trio they reserved their rail tickets. Mr. Arora has not taken a half ticket for his childwho is 6 years old where as Mr, Sharma has taken half tickets for his two children who are 65years and 8 years old. A railway haif ticket costs half of the full fare but the reservation chargesare the same as in a full ticket. Mr. and Mrs. Arora paid 1700,while Mr: and Mrs. Sharma paid2700. Find the full fare of one ticket and the reservation charges per ticket what difference youfind in their behavior and which one you will choose for youself? |
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Answer» Considering a family has one couplelet cost of ticket full ticket = x per full ticketand cost of reservation charge = y per full ticketas per first statment Mr arora has not paid for his childso2x +2 y = 1700 ---------------------eq(1)Mr sharma has paid of his two children2x + 2y + x/2 + x/2 + 2y = 27003x + 4y = 2700 ------------Eq(2)after solving above two linier equation you will gety = 150x = 700so cost of full ticket is -700 and resvertion charge for per ticket is 150 |
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| 79831. |
A ticket is drawn from a bag containing 100 tickets. The tickets are numberedfrom one to hundred. What is the probability of getting a ticket with a numberdivisible by 10? |
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| 79832. |
Exercise 12. 1A ticket is drawn from a bag containing 100 tickets. The tickets are numbered from oneto hundred. What is the probability of getting a ticket with a number divisible by 10 |
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| 79833. |
101+102+103+..............+200 solve |
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Answer» Given series101 + 102 + 103.....+ 200is an AP with first term a = 101and last term = 200 Sum of given series= n/2(first term + last term)= 100/2(101 + 200)= 50(301)= 15050 sum of given series |
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| 79834. |
103 102 1035.= 7500 =100 100 100 |
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Answer» The answer is = 8,195.4525 |
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| 79835. |
14. सूत्र निखिलम् द्वारा 101 x 102 x 103 का मान ज्ञात कीजिए। |
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| 79836. |
107.जब 101 + 102 + 10 + .........+10100 को 6 से भाग किया जाये तो शेषफल |
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Answer» n×n+1/2....100×100+1/2=5050 5050 the correct answer of the given question 5050the correct answer is this 5050 is the correct answer |
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| 79837. |
Evaluate the following using suitable identities:(1) (97)(i) (103)Giii) (199) |
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Answer» (97)³ = (100-3)³ = 100³-3³-3*100*100*3 + 3*3*3*100Using (a-b)³ = a³-b³-3a²b+3ab²= 912673 answer of the question is c |
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| 79838. |
a cnair and that of a table.A bag of rice weighs 20 kg more than one of sugar. If 50 kg of sugar is r the bag of ricebag, its weight becomes twice that of the bag of rice. Find thestuweight of the b |
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Answer» Let the wieght of the bag of sugar be x… now, the question says that the bag of rice wieghs 20 kg more than the bag of sugar, so the wieght of the bag of rice = (x + 20) kg Now, 50 kg is added to the second bag, so the wieght of the bag of sugar = (x + 50)kg Now, the wieght of the bag of sugar is twice the bag of rice, so, =) 2 (X + 20) = (x + 50) =) 2x + 40 = x + 50 =) 2x - x = 50 - 40 =) x = 10 We know, the bag of rice wieghs (x+20) kg or (10+20)= 30 kg :) |
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| 79839. |
4.Construct an isosceles triangle whose base is 8 em and altitude 4 cm and then anothertriangle whose sides are 1times the corresponding sides of the isosceles triangle |
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| 79840. |
ides4 Construct an isosceles triangle whose base is 8 cm and altitude 4 cmantriangle whose sides are 1 times the corresponding sides of the isePen.ol |
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| 79841. |
There are 15 tickets in a box, each bearingone of the numbers from 1 to 15. One ticketis drawn at random from the box. Find theprobability of event that the ticket drawn:i. shows an even number.ii. shows a number which is a multiple of |
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Answer» Total no. of outcomes= 15expected outcomes (2, 4,6,8,10,12,14) probability of getting an even no. =7/15 |
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| 79842. |
one card is drawn at randomA box contains cards bearing numbers from 6 to 70.1from the box, find the probability that it bears(i) a one digit number(ii) a number divisible by 5(ii) an odd number less then 30n(iv) a composite number between 50 and 70 |
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| 79843. |
idesalt4. Construct an isosceles triangle whose base is 8 om and altude 4times the corresponding sides of thethe isoscelestriangle whose sides are 1 |
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| 79844. |
4. ABC is an isosceles triangle whose side ACis produced to E. Through C, CD is drawnparallel to BA. Find the measure of ext DCE.2°8 |
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| 79845. |
4. Construct an isosceles triangle whose base is8 em and altitude 4 em and then another trianglewhose sides are 1 times the corresponding sidesof the isosceles triangle.2 |
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| 79846. |
4 Construct an isosceles triangle whose base is 8 em and altitude 4 cm and then anothertriangle whose sides are 1 times the corresponding sides of the isosceles triangle.2 |
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| 79847. |
13. Construct an isosceles triangle whose base is 7.5 cm and altitude is 3.5 cm. Then construct4another triangle whose sides aretimes the corresponding sides of the isosceles triangle |
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| 79848. |
100100rational numbers between 1 and 2 are101 102 103 198 199100' 100'100' 100EXERCISE 1F1. Find a rational number betweenand2. Find a rational number between 2 and 33. Find a rational number between and43324. Find two rational numbers between-3 and-25. Find three rational numbers between 4 and 5.6. Find three rational numbers between and -2 ,334 |
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| 79849. |
(A- 70 LB =Lc 23.B LA = LB =20, cc 120 -C = so, LB = s ở .cc =I EA 30, CB = soD=so. LB = lod 16 = |
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Answer» 1)<B=80°2)<A=40°3)<c=80°4)<c=30° b=80a=40c=80d=30 best of luck b=80a=40c=80d=30 is the right answer b=80a=40c=80d=30is answer |
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| 79850. |
Example 5 : The school canteen charges 20 for lunch and 4 for milk foreach day. How much money do you spend in 5 days on these things? |
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