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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.
| 77951. |
Two men start from opposite ends A and B of a straight track respectively and meet apoint 60 m from A. If AB 100 m, what will be the ratio of speeds of both men? |
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| 77952. |
272A class teacher has the following absentee record of 40 students of a class for the wholeterm. Find the mean number of days a student was absent.&.Number of 0-6 6-10 10-14 14- 20 20-28 28-38 38-40days10Number of11students |
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| 77953. |
A takes 6 days less than the time taken by B to finish a piece of work.If both A and B together can finish it in 4 days, find the time taken byB to finish the work.E 28(CBSE 2017) |
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| 77954. |
A takes 6 days less than the time taken by B to finish a piece of work. If both A and Btogether can finish it in 4 days, find the time that B would take to finish this work byhimself |
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Answer» B alone finish work in x daysA alone work in (x -6) days A one day work = 1/(x-6) B one day work = 1/x A+B one day work = 1/4so, 1/(x-6) + 1/x =1/4x+x-6/x(x-6) = 1/42x-6/x(x-6) =1/44(2x-6) = x(x-6)8x-24 =x^2 - 6xx^2 -14x + 24 = 0x^2 - 12x - 2x + 24 = 0x(x - 12) - 2(x - 12) = 0(x - 2)(x - 12) = 0x = 12 or 2 2 value not possible Therefore, B alone would finish work in 12 days |
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| 77955. |
300 ÷ 100425 ÷ 100682 ÷ 100810 ÷ 100905 1001500 ÷1004320 ÷100-d5002 ÷1006123 ÷100,7999 ÷100 |
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| 77956. |
100+200+200+100+100+100+100/200 +300+500+100+400+300+ 200 |
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Answer» 300+300+300/500+600+900 = 900/2000 = 9/20 |
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| 77957. |
100+100+100+100 |
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Answer» correct answer is 400 100+100+100+100=400is the right answer of the following correct answer is 400 |
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| 77958. |
(4) Express the following percentage as ratio in the reduced form:75, 100. |
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| 77959. |
Consider the following distribution of daily wages of 50 workers of a factory:Daily Wages (in ) 100-120 120-140 140-160 160-180 180-200No. of WorkersFind the mean daily wages of the workers of the factory by using an appropriate method.22.12148610 |
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| 77960. |
ofafactory.2.wing distribution of daily wages of 50 workersDaily wages in Rupees 200-2500-250 250-300 300-350 350- 400 4250400- 450610Number of workers1214Find the mean daily wages of the workers of the factory by using an appropriate method.stollowance of children of alocality. The |
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Answer» Mean = 275 + ( 38/50 ) × 50 = 275 + 38 = 313 Therefore , Average of the daily wages is 313 |
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| 77961. |
G 100 men attt pluisions last?A given quantity of rice is sufficient for 60 persons for 3 days. How many days would the thelast for 18 persons?9. |
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| 77962. |
The markcd price tcA shop keeper purchased 200 bulbs for? 10 each However 5 bulbs were fused and purthem into scrap. The remaining were sold atて12each Find the gain or loss percent.te entries (Wherever possible) |
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| 77963. |
Pintu takes 6 days more than those of Nishu to complete certain work. If they worktogether they finish it in 4 days. How many days would it take to complete thework if they work alone. |
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Answer» Let Pintu take = x daysNishu takes = (x - 6) daysIn one dayPintu does = 1/xNishu does = 1/(x - 6)The two together do 1/x + 1(x - 6), and they take 4 days;So1/x + 1(x - 6) = 1/48x - 24 = x² - 6xx² -14 + 24 = 0x² - 2x - 12x + 24 = 0x(x - 2) - 12(x - 2) = 0(x - 12)(x - 2) = 0Eitherx - 12 = 0x = 12orx - 2 = 0x = 2x can not be 2, so we take x = 12Pintu alone takes = 12 daysNishu alone takes = 12 - 6 = 6 days |
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| 77964. |
100751000136H1-)2 =HX-)2 = 124+ 12610 |
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Answer» √136/√100√136=√100+36√136=10+6 x=16/10 +6/5x=160+60/10x=220/10=10 |
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| 77965. |
1. Two numbers are in the ratio 11:7. If thesmaller number is 700, what is the largernumber ? |
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Answer» Let the number be x so numbers are 11x and 7x , the smaller number is 700 so7x = 700 x = 100the larger number will be 1100 |
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| 77966. |
EXER1. Two numbers are in the ratio 11:7. If thesmaller number is 700, what is the largenumber ? |
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Answer» let X be the common multiplehence11x and 7xsmaller is 700hence7x=700X=100hence larger no is 11x=1100 |
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| 77967. |
The following distribution gives the daily income of 50 workers of a factoryDaily Income (in1100-120 120-140148140-160 160-180 180-200Number of workers 1Convert the distribution above to a less than type cumulative frequency distributionand draw its ogive.10 |
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| 77968. |
11. The following distribution gives the daily income of 50 workers of a factory. Convert the distributionabove to a less than type cumulative frequency distribution and draw its ogive.Daily income 100-120Number of 12120-140140-160160-180180-20014610workers |
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| 77969. |
NTAL MAT.3 persons can build a wall in 4 days, then 4 persons can build it in: |
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Answer» 3 Person can build a wall in 4 days1 person can build = 4/3 days4 person will build = 4/3*4= 16/3 days no |
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| 77970. |
A given quantity of rice is sufficient for 60 persons for 3 days. How many days would the ricelast for 18 persons? |
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| 77971. |
10 Two persons could fit new windows in a house in 3 days.0 One of the persons fell ill before the work started. How long would the jobtake now?(ii)How many persons would be needed to fit the windows inone day? |
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| 77972. |
(-27) * (46) + (-27) x (-14) - (27 x - 2) = _ |
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| 77973. |
By selling a radio for 1903, a shop keeper gains 5%. Find the cost price of the radio. |
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Answer» 903+5/100=903+20=923 |
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| 77974. |
1 4 0] [3 2 1] [3 2 ।।14. यदि 4=| 2 5 0. B =| 1 2 3 तथा C =| 1 2 3. तो 18 - AC का मान ज्ञात कीजिए।| |36 0 4 5 6 7 8 9 |
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| 77975. |
s What is the speed of light in one year? |
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Answer» 1 light-year= 9.461 × 10^15metres |
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| 77976. |
H0W much tood does an elemeelephent PวาWhat does an elephant eat? |
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Answer» Elephants consumegrasses, smallplants, bushes,fruit,twigs,tree bark, androots.Tree barkis a favorite food source for elephants. Please hit the like button if this helped you. |
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| 77977. |
A 1 0 0 2 3 4 5(-6) x |
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| 77978. |
\frac{\left(3^{4}\right)^{2} \times 5^{15} \times 5^{-6}}{5^{9} \times\left(3^{2}\right)^{4}} |
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| 77979. |
(b) Two numbers are in the ratio 11:12 and their sum is 460. Find the numbers. |
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| 77980. |
The following distribution gives the daily income of 50 workers of a factory:Daily Income (in )100-120 120-140 140-160 160-180 180-200Number of workers121410Convert the distribution above to a less tham type cumulative frequency distributionand draw its ogive. |
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| 77981. |
I. The following distribution gives the daily income of 50 workers of a factoryDaily income (in100-120 120-140 140-160 160-180 180-200Number of workers121410Convert the distribution above to a less than type cumulative frequency distribution,and draw its ogive. |
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| 77982. |
a = 2 ^ { 3 } \times 3 , b = 2 \times 3 \times 5 , c = 3 ^ { n } \times 5 \text { and } \operatorname { LCM } ( a , b , c ) = 2 ^ { 3 } \times 3 ^ { 2 } \times 5 , |
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| 77983. |
Rs.195.A shopis Rs. 22,250. Then find the marked price of the television set.keeper gives l 1% discount on a television set, hence the cost price of it |
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Answer» find the simple interest on 16000 for 3 years at 8% |
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| 77984. |
{(2/3÷3/4*5/6)÷(2/3÷3/4*5/6)} |
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| 77985. |
01234562 |
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| 77986. |
ELE 28If 3 tan A tan B = 1, prove that2 cos (A + B) = cos (A-B). |
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Answer» 3 (sinA/cosA) (sinB/cosB) = 1 (sinA sinB/cosA cosB) = 1/3 (2sinAsinB/2cosA cosB) = 1/3 [cos(A-B) -cos (A+B) ] / [ cos(A+B) +cos (A-B) ] = 1/3 now cross multiplication 3cos(A-B) -3cos (A+B) = cos(A+B) +cos (A-B) 3cos(A-B) -cos (A-B) = cos(A+B) + 3cos (A+B) 2 cos(A-B) = 4 cos (A+B) cos(A-B) = 2 cos (A+B) |
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| 77987. |
560-460=? |
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Answer» 560-460= 100thanks 560-460= 100 answer bro 100 is correct answer.... |
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| 77988. |
22) Two APs have the same common difference. The firstterm of one AP is 2 and that of the other is 7. Thedifference between their 10" terms is the same adifference between their 21 terms, which is same asdifference between any two corresponding terms. Why?the |
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Answer» Let the same common difference of two AP’s isd, Given that, the first term of first AP and second AP are 2 and 7 respectively, then the AP’s are2,2 + d,2 + 2d,2 + 3d,.,.and7,7+ d, 7 +2d, 7+3d,…Now, 10th terms of first and second AP’s are 2 + 9d and 7 + 9 d, respectively.So, their difference is 7 + 9d – (2 + 9d) = 5Also, 21st terms of first and second AP’s are 2 + 20d and 7 + 20d, respectively.So, their difference is 7 + 20d – (2 + 9d) = 5Also, if the a„ and bnare the nth terms of first and second AP.Then, bn-an= [7 + (n-1)d)] – [2 + (n-1)d] = 5Hence, the difference between any two corresponding terms of such AP’s is the same as the difference between their first terms. |
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| 77989. |
Consider the following distribution of daily wages of 50 workers of a factoryaily wages (in ) 500-520 520-540 40-560 560-580 8060Number of workers121410Find the mean daily wages of the workers of the factory by using an appropriate meth |
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| 77990. |
L mL28 790+33 560 |
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| 77991. |
112 \times 5 ) + 5 = 560 + 5 = 565 |
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Answer» by BODMAS rule(112×5)+5=560+5=565 |
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| 77992. |
A planc left 30 minutes late than its scheduled timc and in order to reach the destination 15maway in time, it had to increase the speed by 250 kn/h from the usual speed. Find its usua stei |
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Answer» Let the usual time taken by the aeroplane = x km/hrDistance to the destination = 1500 km --------Speed = Distance / Time = (1500 / x) Hrs ------------Time taken by the aeroplane = (x - 1/2) Hrs Distance to the destination = 1500 kmSpeed = Distance / Time = 1500 / (x - 1/2) HrsIncreased speed = 100 km/hr[1500 / (x - 1/2)] - [1500 / x] = 100150((10/x-1/2)-10/x0=10015 /x -1/2- 15/x =130x -30x +15=2x^2-x15=2x^2-x2x^2-x-15=02x^2 - 6x+5x-15=02x(x-3)+5(x-3)2x+5=0 or x-3 =0x=-5/2 or x=3 Since, the time can not be negative,The usual time taken by the aeroplane = 3hrsand the usual speed = (1500 / 3) = 500km/hr |
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| 77993. |
Cost price Rs 175. Selling price Rs 195 |
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| 77994. |
4с(iii) The value ofdi) The value of (+)-is equal tosequal toсл6+425OTO |
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Answer» (-3/5)^6÷(-3/5)^4=(-3/5)^6*(-5/3)^4=3^2/5^2=9/25 |
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| 77995. |
Potential differana = 4,5 wattEle tris Burant 3Resistance = ?3x10 ampoo |
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| 77996. |
Two APs have the same common difference. The difference between their 100th terms is100, what is the difference between their 1000th terms? |
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| 77997. |
How many metal cubical blocks of side 30 cm can be cast by melting a rectametal 3m×75cm ×60cm? |
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Answer» Volume of metal (cuboid) = L. b. h. 3*75*60= 13,500volume of cube = (side / l)³side³ = (30)³27,000 |
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| 77998. |
26. Two A.P.'s have the same common difference. The difference between their 100th terms is 100, what isthe difference between their 1000th terms? |
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| 77999. |
rectangular hall is 12 m long and 6 m broad. Its flooring is t8 0e Itules of side 30 cm. How many tiles will fit in the entire hall? How many woulerequired if tiles of side 15 cm were used?4. A3 m |
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Answer» surface area of rectangular floor= (12m)(6m)=72m^2surface area of tiles= (30cm)^2=900cm^2=0.09m^2therefore the number of tiles to fit the entire floor=72/0.09=800number of tiles to fit the floor if tiles is of size 15 cm= 4×800= 3200 |
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| 78000. |
There are two positive numbers in the ratio 5:8. If the larger number exceeds the smaller by 15.Find the smaller number |
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