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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.
| 76801. |
A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball from theis thrice that of the red ball, find the number of blue balls in the bag. |
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| 76802. |
The present value of a car is ?75,000. Its value deprcciates every year by 15%. What will be its vavfter 3 years? |
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Answer» present value =₹75000depreciate =15%time =3yearsprice after3 3years= 75000(1-depreciate/100)time=75000(100-15/100)3=75000(85/100)3=75000*85/100*85/100*85/100=368475/14 |
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| 76803. |
A bag contains 7 white and 9 black balls. Two ballprobability that one of themin secession at random. What are the probability that one offeris white and the other black? |
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Answer» 7*9/16*15 + 9*7/16*15 = 21/80 + 21/80 = 42/80 = 21/40 |
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| 76804. |
7. A bag contains 7 blue, 8 red , 6 green and 5 yellow balls. A ball is drawn at randomFind the probability of gettinga) a green ballb) a yellow ballc) a white ball |
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Answer» Number of blue balls=7Number of red balls=8Number of green balls=6Number of yellow balls=5Total number of balls=7+8+6+5=26we know that, probability of finding a specific ball= (number of that specific ball)/(Total number of balls) a) probability of finding a green ball=6/26=3/13 b)probability of finding a yellow ball=5/26 c)probability of finding a white ball=0/26=0 |
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| 76805. |
rectangular grassy plot is 75 m long and 60 m broad. It has a 2-m-wide path all around it on the inFind the area of the path and the cost of gravelling it at Rs 3.60 per m1 manet 05 n bTTm Inside the plot, a path of uniform width of 3.5 m is |
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| 76806. |
110.JU cmFind the area of the field in the form of a rhombus, ifthe length of each side be 14 cm and the altitude be6 cm.a) 224 cm?=) 424 cm(b) 124 cm(d) 234 cmrectangular grassy plot is 112 m long and 78 |
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| 76807. |
thtperimeter of thePart ABEICBSEĂşs. in Fig. 13.82, find the area of the shaded region. (Use T 3.14)3 cm3 cm-> 2 cm +-3.5 cm14 cmFig. 13.82Fig. 13.8319. In Fig. 1383, QACR is a nd |
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Answer» Please like the solution |
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| 76808. |
The angle of clevacdhonthe opelevcttion ot tha top ot tha buiddirAom fhe允otot the toco ea is 60°人hod is the Yafio, at- the heighhng60060 |
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| 76809. |
(b) A bag contains 7 white, 5 black and 4red balls. Four balls are drawn withoutreplacement. Find the probability thatat least three balls are black. (CBSE) |
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| 76810. |
3. A rectangular grassy lawn measuring 38 m by 25 m has been surrounded externally by a 2.5m wide pathCalculate the cost of gravelling the path at the rate of120 per m2 |
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| 76811. |
EXERCISE 20Brectangular grassy plot is 75 m long and 60 m broad. It has a path ofon the inside. Find the area of the path and the cost of constructing05 mhy 72 m. Inside the plot, a |
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| 76812. |
Carry out the following division:(a) 15x2 +3x by 5x +1 |
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| 76813. |
, the area of the trapeziumhens(sum of parallel sides) height1(22 + 38% height60585 # 19,5 cm30nce, the height of the trapezium19.5 cmASSIGNMENT 2How many metres of a carpet, 75 cm wide will be required to cover the floor of a roomand 12 m broad?A rectangular grassy plot is 112 m by 78 m. It has a gravel path 2.5 m wide all around itFind the area of the path and cost of constructing it at 2 per square metre.Find the area of a triangle whose sides are 50 m, 78 m, 112 m respectively and also find the perpendicularfrom the opposite angĹs on the side 112 m.on theinside. |
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Answer» please give me a one question for your solution |
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| 76814. |
The cost of carpeting a room 15 m long with a carpet 75 cm wide, at 70per metre, is 8400. The width of the room is(a) 9 m(b) 8 m(c) 6 m(d) 12 m |
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| 76815. |
mn 7) Determine the number of significant Ggures inuidity.forfollowing measurement(a) 0.05718,(c) 2.35 x(b) 93.26,1019 (d) 1.3725 x 10[Ans (a) 4, (b) 4, (c) 3 (al balanoofn gbiact vas weighed by a physIC |
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Answer» 4435 are the number of significant figures |
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| 76816. |
area of the floor which is not cal pellu7. A lane. 150 m long and 9 m wide, is to be paved with bricks, each measuring 22.5 cm by7.5 cm. Find the number of bricks required.m urith a carpet 75 c |
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| 76817. |
6. In a two digit number, the ten's digit is three times the unit's digit when the number is increasedby 54, the digits are reversed, find the number. |
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Answer» Let the digit at unit's place be x.GIVEN : digit at Ten’s place = 3xNumber formed :10 × 3x + x = 30x + x = 31xNumber formed after reversing the digits: 10 × x + 3(x )= 10x +3x = 13xATQ,31x -54 = 13x [Given]31x -13x = 5418x = 54x = 54/18x= 3Number = 31x = 31 × 3 = 93 Hence, the number is 93. |
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| 76818. |
Y A bag contains shed 4 black and agreen balls Two balls are drawni at random from the bay. Find ththat both are ofprobabilityaubtcolours |
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| 76819. |
14 cm3 cm3 cm3 c14 cm3 cmFig. 2 |
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| 76820. |
3 cm3 cm3 cm3 cm |
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| 76821. |
42. A rectangular grassy land is 65 m long and 50 nmbroad. It is surrounded by 3 m wide path. Find thecost of gravelling the path at 2.50 per m |
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| 76822. |
(a) Not possible1. Tick() the correct answer.(1) 204 (-1) +0=(-5) =(a) -204(b) 204(c) -5(ii) Which among the following satisfies division of integers?(a) Closure Property(b) Commutative Property(d) Property of 1(c) Associative Property(iii) Ifa* b= a +b-a-6, then (8) *(-4)=(d) -14(a) 10(b) 2105...16 |
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Answer» Your answer are all correct Yes, your ticks are correct... i not possibleii.closure propertyiii.6 |
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| 76823. |
2 Find the area of a quadrilateral ABCD in which AB 3cm, BC 4 cm, CD 4 cm,DA-5 cm and AC5 cm, |
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| 76824. |
How many metres of carpet 75 cm wide will be required to cover the floor of a room which is 12 m long and 8 m wide? |
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| 76825. |
How many metres of carpet 75 cm wide willbe required to cover the floor of a room whichis 12 m long and 8 m wide? |
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Answer» area of the carpet= area of the floorArea = L*W= 12m*8mArea=96mThe carpet is 0.75 meters widealso .A = L*Wso area =0.75m*l96m=0.75Ll= 96/0.75L= 96*4/3length=128m hit like if you find it useful |
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| 76826. |
8. Construct a quadrilateral ABCD in which AB-2.9 cm. BC-3.2cm. CD 27DA = 3.4 cm and LA = 70。RC #: 5 cm. CD-4.6 cm, LB-32 |
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| 76827. |
The floor of a hall of dimensions 18 m by 11 m is to be covered with a 150 cm wide carpet leaving apace of 1.50 m all around. Calculate the length of the carpet required. |
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Answer» Given : Dimension of floor = 18 m by 11 mAndWidth of carpet = 150 cm = 1.5 m ( As we know 1 m = 100 cm )AndCarpet leaving a space of 1.50 m all around , SoDimension of carpet = ( 18 - 1.50 - 1.50 ) m by ( 11 - 1.50 - 1.50 ) m 15 m by 8 mSo,Area of carpet = 15×8 = 120 m2Let length of carpet required = x, So width of carpet×Length of carpet = 120 1.50x= 120 x= 80 |
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| 76828. |
ZA 85,BC (cm) =2 cm21. Fay To Fear # PQ II BC, AP = 2 cm, BP = 6 cm, PQ = 3 cm(A) 8(B) 9(C) 10(D) 1222. afc 0 = 45°, at tan 0+ 2 AH-C) 3(D) 5Q3 cm6 cmsino |
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Answer» ∆APQ ~ ∆ABCAP/AB= AQ/AC=PQ/BC2/8= 3/BCBC= 12cm22)let thita=Atan^2A+1/sin^2A=tan^2(45)+cosec^2(45)= (1)^2+(√2)^2= 1+2=3 |
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| 76829. |
(a) 30°(c) 45°(d) 60°17. In the given figure, straight lines AB and CDD = 130°, thenintersect at O. If <AOC + <BO(b) 115°(d) 125°PO is the(a) 65P |
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| 76830. |
6 cm2 cm3 cm5 cm |
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Answer» 1.414 by the pyathagores therom |
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| 76831. |
Construct a quadrilateral: (1-5)1.ABCD in which AB = 4.5 cm, BC-4 cm, CD-6.5 cm, DA-3 cm and BD = 6.5 cm. |
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| 76832. |
Example 5: Shanta runs an industry ina shed which is in the shape of a cuboidsurmounted by a half cylinder (see Fig.13.12). If the base of the shed is ofdimension 7 m x 15 m, and the height of7 m.the cuboidal portion is 8 m, find the volumeof air that the shed can hold. Further,suppose the machinery in the shed 8moccupies a total space of 300 m3, andthere are 20 workers, each of whomoccupy about 0.08 m3 space on anaverage. Then, how much air is in theFig. 13.12shed? (Take Tt7 |
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| 76833. |
Multiple Choice Questions (MCQs)7. Two small circular parks of diameters 16 m and 12 m are to be replaced by a bigger circular parkWhat would be the radius of the new park if the new park occupies the same space as the two smalparks?(a)10 m(b) 15 m(c) 20 m(d) 25 md is increased from 12 m to 23 m. How much addtitional grassy grour |
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Answer» The area occupied by both parks together would be(πx8²) + (πx6²) = 100π So the new park should be of area 100π.π x (New Radius)² = 100π So, (New Radius)² = 100 [As we cancel π on both sides]Therefore, New Radius = 10m hit like if you find it useful |
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| 76834. |
If a property holds good with respect to addition for rational numbers, whether it holdsgood for integers? And for whole numbers? Which one holds good and which doesn'thold good? |
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| 76835. |
L O 5; U,fl9795 = G opuws ' ov™है |
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| 76836. |
OV OoF aRdLs)995 Z = 9/_//\——’9 शा oFLT |
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| 76837. |
vue—1) (V. e+lOV e | VIO 271| न ७ |
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Answer» Like my answer if you find it useful! |
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| 76838. |
. The side of a square is 2 metres and semicircles are constructed on each side of the square. The areaof the whole figure is(a) (4 + 2x) m2(b) (4 +4r) m2(c) 4 Ď m2(d) 8Ď m2 |
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Answer» If you find this solution helpful, Please like it. |
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| 76839. |
The perimeter of the floor of a room is 18 m and its height is 3 m. What is the areaof the room?(a) 21 m2(b) 42 m2(c) 54 m2(d) 108 m2 |
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Answer» Perimeter of rectangle =2(l+b) 18=2(l+b) Then, Area of four walls =2(l+b) *h Area of four walls=18*3 Area of four walls =54m² |
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| 76840. |
(n) Linear pairs are (ZAOE, ZEOB), (ZAOC, ZCOB).Fig 5.18(ZCOB, 4BOD)Vertically opposite angles are: (LCOB,ZAOD),and (ZAOC,ZBOD)i)EXERCISE 5.1Find the complement of each of the following angles:63°57°20° |
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Answer» (i)90-20= 70 degree(ii)90-63=27degree(iii)90-57=33 degree |
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| 76841. |
Thediagonalof a quadrilateral shaped field is 24 m andthe perpendiculars dropped on it from the remainingopposite vertices are 8 m and 13 m. The area of the field is(a) 252 m2 (b) 156 m2 (c) 96 m2 (d) 1152 m2 |
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| 76842. |
6 cm2 cm3 cm5 cmFind the area. |
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Answer» thanks |
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| 76843. |
4 cm,Find the area of a quadrilateral ABCD in which AB: 3 cm, BCDA 5 cm and AC 5 cm.2.4 cm, CD |
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| 76844. |
the angles form a line.For obvious reasons, the two axioms above together is called theLineiomLet us now examine the case when two lines intersect each other.Recall, from earlier classes, that when two lines intersect, the verticallyare equal. Let us prove this result now. See Appendix 1 for the ingredi, and keep those in mind while studying the proof given below.rem 6.1 : If two lines intersect each other, then the verticallys are equal.: In the statement above, it is givenvo lines intersect each other'. So, letCD be two lines intersecting at O asn Fig. 6.8. They lead to two pairs ofy opposite angles, namelyC and 2 BOD (ii) < AOD andesFig. 6.8:Vertically opposite |
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Answer» We need to prove that ∠ AOC = ∠ BOD and ∠ AOD = ∠ BOC. Now, ray OA stands on line CD. Therefore, ∠ AOC + ∠ AOD = 180° (Linear pair axiom) ………..(1) Can we write ∠ AOD + ∠ BOD = 180°? (Linear pair axiom)……………(2) From (1) and (2), we can write ∠ AOC + ∠ AOD = ∠ AOD + ∠ BOD This implies that ∠ AOC = ∠ BOD Similarly, it can be proved that ∠AOD = ∠BOCClick to let others know, how helpful is it cob =aod vertically opposite angle |
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| 76845. |
(a) A(b) Ais an object that occupies space.is an |
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Answer» volume is the answer |
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| 76846. |
ĺä¸.. Slove-the-following elimination methodOV2.2C-er |
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Answer» 5x + 3y = -9 ......(1) 2x - y = -8 ......(2) Eliminate y by (1) + 3 × (2) 5x + 3y = -9 6x - 3y = -24 11x = -33 x = -3 So, y = 2x + 8 = -6 + 8 = 2 |
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| 76847. |
ov)2 If the |
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Answer» Circumference of circle = 2 × pi × r So, 2 × 22/7 × r = 176 r = (176 × 7)/ 44 r = 4 × 7 r = 28 cm |
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| 76848. |
The length of a room is 50 per cent more than its breadth.The cost of carpeting the room at the rate of 38.50m2 isăŚ924 and the cost of painting the walls at the rate of 5.50per m2 is ? 1,320. Find the dimensions of the room. |
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Answer» Let length (l)=x+1/2x=3/2xLet breadth (b)=xArea of floor=924×100/3850l×b=243/2x×x=243/2x^2=24x^2=24×2/3x^2=4^2x=4Area of 4walls=1320×100/5502 (l+b) h=24010×h=240/2h=12ml=3/2×4=6mb=x=4m thanks |
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| 76849. |
12. Find the measure of all the angles of a parallelogram. If one angle is24 less than twice the smallest angle. |
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| 76850. |
12. Find the measure of all the angles of a parallelogram. Ifone angle is24 less than twice the smallest angle. |
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