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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
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23. Find dy if y=xemple |
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Answer» y |
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| 2. |
Q 4: How many ) maximum (i) minimum number of zeroes can a quadratic polynomial have? |
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Answer» A quadratic polynomial can have only two roots and zero roots. |
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Which minimum number should be subtracted from 450 to make it a perfectsquare?5. |
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The minimum number of points of intersection of three lines in a plane is |
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दिसंबर2012| फरवरी| जनवरी 2019।गुरुवार।।।। 15।।।।।। ।।13 14 15 16५ ।MathsdärmeFind the Lc.m of 54,96 sindfactorization moted method. |
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Answer» L.C.M. = 2592 this is correct This is correct answer 54/2=27/3=9/3=3; 96/2=48/2=24/2=12/2=6/2=3; 108/2=54/2=27/3=9/3=3:; 54=2×3×3; 96=2×2×2×2×2×3; 108=2×2×3×3×3; 54=18; 96=96; 108=4x27 |
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S. A gulab jamun.contains sugar syrup up to aboutof its volume. Find approximately how muchn 45 gulab jamuns, each30%syrup would be found ishaped like a cylinder with two hemispherical endswith length 5 cm and diameter 2.8 cm (see Fig 13.15)A pen stand made nf |
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| 7. |
(1)Find the larger of each pair of fractions below, without multiplication:) 13 1413 1 i) 15' 1817 1814 1117' 15i) |
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Answer» 1. 14/15 is the larger fraction as the denominator is smaller. 2. 13/17 3. 14/15 |
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0iug 8f the polygon. (6).The perimeter of a ligram is 40 cm.if the ratio of the length tobhuadth is 3:2, What are the length of sides of ligram. /(12,8)RK QUESTIONS |
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| 9. |
\left[ \begin{array}{ccc}{-1} & {2} & {3} \\ {2} & {5} & {6} \\ {3} & {x} & {7}\end{array}\right]is a symmetric matrix. Then find x |
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Answer» x= 6 will be the answer |
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7.Write the largestseven digit number starting with 3 and ending with 1.39999ulouu tate of India is Sikkim while the least populous union |
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Answer» 30000001 is correct. . |
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7. Seven times the quotient of x and 9 added to 225ivesWhat is x? |
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Answer» 7(x/9)+2 = 25/9 7x +18 = 25 7x = 7 x=1 |
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together?What is the minimum number of girls to make teams of 18, 24 and 30 exactly ?57 |
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Answer» The answer is the Lowest common multiple of 18,24 and 30.which is 360 |
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| 13. |
cosA+sinA cos A—sin A Ly eCOSA—SinA_cosA+sinA कि नाई गए |
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| 14. |
find dy when.amoyma Cowy)mtn. |
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| 15. |
14. In how manyphotograph if the girls are to sit onin a row behind them?ways can 6 boys and 5 girls be arranged for a groupchairs in a row and the boys are to standPROOF H |
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8. In how many ways can 6 boys and 5 girls be arranged for a group photosgirls are to sit on chairs in a row and the house are to stand in a row behind thenThoused for a group photograph if the |
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(Lamp post)10. The sides of the triangle are in the ratio 3 :5: 7 and the perimeter is 300 m. Find its area.Answer Tvpe Questions:he arew wheat. In another triang |
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Answer» Wrong |
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(i) cos o -sina = V2 sin o 2T (RS , cosa +sina =V2 cos ÂŤ |
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| 19. |
sin a-cos α , then show that sin α + cos αsin α + cos αcosaIf tan θ-cose. |
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| 20. |
Construct a 3 x 2 matrix A-[a, ] whosc clements are given by ai ji j2 |
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| 21. |
Ez. 10. Two numbers are in the ratio of 15: 11. If their H.C.F. is 13, find the numbers. |
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Answer» what is lcm.............. |
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| 22. |
and hence total surface area 8f eubolu.A well is dug 16 m deep with a diameter of 1.4 m. The earth taken out is spread over a rectangular plot oflength 11 m and breadth 0.8 m to increase the level of ground. What is the height by which level has beenraised?c tnd its volume. |
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Answer» Volume of the earth taken out from the well = πr²h = 3.14x(0.7)²x16 = 24.63 m³ volume will be same in both cases. volume of the rectangular plot that is volume of a cuboid= lxbxh11x0.8xh=24.63h=(24.63/8.8)h=2.798 ~= 2.8m |
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| 23. |
13. Find the volume of the largest sphere curved out of a cĂźbe 8f siae or u.14.In a right circular cylinder, if the radius is halved and the height is doubled, then its volumes(a) the same(b) doubled(c) halved(d) none of these |
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| 24. |
2. The sum of the ages of two brothers, having a differenceof 8 yr between them, will double after 10 yT. What is theratio of the age of the younge: brother to that of the elderbrother?0)7:11(0)3:7(89 (d) 10: 13The ratio of two numbers is 3:4 and their LCM is 180. The |
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Answer» How did the elder brother drown |
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| 25. |
(2) How many fours in 56?(3) What is the sum of 60 and 8(4) What is the product of 8 and(5) 420-x 606) Add 24 to seven fours7) 45 p. + 105 p. + 70 p.6x0x9=) 151x-151 |
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Answer» 2) 4*14 = 56 3) 60+8 = 68 5) 420 = 7*60 6) 24+74 = 98 7) 45+105+70 = 220 8) 6*0*9 = 0 9)151*1 = 151 |
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let n be the no. of ways in which 5 boys and 5 girls can stand in a queue in such a way that all the girls stand consecutively in the queue. let m be the no. of ways which 5 boys and 5 girls can stand in a queue in such a way that exactly 4 girls stand consecutively in the queue . then the value of m/n is (a) 4,(b) 5,(c) 6,(d) 7. |
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| 27. |
Add the following monomials.(a) 3x, 5x, 2x |
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Answer» a) 3x + 5x + 2x = 10x |
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. Construct a triangle PQR, in which PQ 6 cm, QR 7 cm and PR 8 cm. Then constructanother triang le whosc sides are times the corresponding sides of APQR. |
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| 29. |
,10 cosa coscosa cosy and A, - Acocowy 011001. If A, - cosa cowycop cowycos'acos B.cosyl.then |
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| 30. |
TwoÄubes haye their volumes in the ratio 1:21 Fiild the |
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| 31. |
e Be are in the ratio 13 118f all its sidesb) |
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| 32. |
15. The sides of a triangle are in the ratio 13 14 15 and its perimeter is 84 cm. Find the areaof the triangle. |
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Answer» thank you |
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| 33. |
Prove (SinA+CosecA)? +(CosA + SecA)i= 7+taniA +cotâAP o - ot |
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| 34. |
Exercise 298cm, 125cm, 140cm, 155cm, 174cm, 140cmLong jumps by 7 students of a team areand 155cm. Find the mode of the data.I. |
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| 35. |
Long Answer Questions1. Laxman hits 3 fours consecutively on 3 balls. How many runs did he score in those 3 balls?2. A commando jumps from a helicopter which is at 1500 m above the ground. He covers 100 m eminute. How long will he take to reach the ground?200C Then it was switched off and the temnernshiresto |
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Answer» 1. 3x4=12 run laxman made 12 ryns in 3 balls. |
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13th the term of AP 4 times is 3rd term. If its 5 th term is 16th then find the sum of 1st ten terms. |
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Find the area of a trianglele two sides of which are 18cm and 10cm and the perimeter issidesFin42cm |
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| 38. |
B .,,. S p; i«व 11पटe . Q’;Hq (X;.. लए |
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Answer» x²-6x-3x+18=0x(x-6)-3(x-6)=0(x-3)(x-6)=0x=3,6 |
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9.A well of diameter 150cm has a stone parapet around it. If the length of the outer edge of theparapet is 660cm, then find the width of the parapet. |
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4B 60° and C-70P. Find the measu-res of the angles of the triangle12. In a triangle LABC, ZA 0,formed byjoining the mid-points of the sides of this triangle |
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E are points on sides AB and AC resBC) = that DE IBCpectively of △ ABC such thatar(EBC). Prove |
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| 42. |
Sides of a triangle are in the ratio 13: 14:15 and its perimeter is 84 m Finof the |
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Answer» tnx |
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| 43. |
lowest ionization energy in 14th group of periodic table |
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Answer» The ionization energy for silicon is lower because the outermost electrons for silicon (3p) are further away from the nucleus than those of the 2p level for carbon. |
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ASolve the problems with 'DMAS' or1. 18 - (5 + 3) |
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Answer» 5+3=8 so 18 -8=10 form badmas 18-(5+3)=18-8=10 is the answer 18-(5+3)=18-(8)=10 is the answer. 18 - (5+3) 18-8 = 10 is correct answer 18-(5+3)=18 -(8)=18-8=10 and your answer will be 10 correct answer is 10 |
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0. 20. Write 'T' for true and F" for false for each of the statements given below(1) -3xy'z is a monomial.is a solution of 2x + 5-8(iii) 2x + 3 = 5 is a linear equation. (iv) The coefficient of x in Sxy is 5(v) 8-=5 > * 3. |
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Answer» फर्स्ट फर्स्ट सेकंड थर्ड फोर्थ |
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| 46. |
(xii) The ionization energy of hydrogen atom is:(b)leV(a) 13.6 eV(c) 13.6 J(d) 10.2 eV |
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Answer» Ionisation energy is 13.6Voption a |
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Mathemátics XE and F are respectively the mid-points of sides AB, BC and CA of Δ ABC. Finthe ratio of the areas of Δ DEF and Δ ABC. |
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A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12cm.Find the volume of the solid so obtained.1 5m then fin |
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Answer» 1 2 |
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| 49. |
The angle in one regular polygon is to that in another as 3 : 2 and tiis twice that in the second. Determine the number of sides of twoast. Fin9 The angles of a triangle are in A.P. such that the greatest is 5 times thes of two polygons.in radians.the difference between their |
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Answer» how 4x and 6d came |
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| 50. |
Long jumps by 7 students of a team are 98cm, 125cm, 140cm, 155cm, 174cm, 140cnand 155cm. Find the mode of the data. |
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Answer» Long jumps by 7 students of a team are 98 cm , 125 cm , 140 cm , 155 cm , 174 cm 140 cm and 155 cm. Arrange the data in ascending order , 98 cm , 125cm , 140 cm , 140 cm , 155 cm , 155 cm , 174 cm By observing data we can find that 140 cm and 155 cm repeated 2 times each . Therefore, mode of the data = 140 cm and 155 cm |
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