mathematics MCQs – Page 58

Practise multiple-choice questions from mathematics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

1141. The length of a rectangle is increased by 60 %. By what percent would the width have to be decreased to maintain the same area?
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A. 60%

B. 120%

C. 75%

D. 37 %
1142. [10 + {4 * ({2/3 + 1/4} * ?144/121 + 23) 12 + 5} 3] = _______?
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A. 10

B. 20

C. 15

D. 8

1143. Find the H.C.F of 12, 16, 18 and 24?
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A. 4

B. 2

C. 3

D. 1

1144. The wheels revolve round a common horizontal axis. They make 15, 20 and 48 revolutions in a minute respectively. Starting with a certain point on the circumference down wards. After what interval of time will they come together in the same position?
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A. 2 min

B. 1 min

C. None

D. 3 min

1145. What part of a ditch 48m long 16.5 broad and 4m deep can be filled by the earth got by digging a cylindrical tunnel of diameter 4m and length 56m?
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A. 9-Jul

B. 9-Jan

C. 2/9

D. 9-Aug

1146. The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:
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A. 13

B. 3

C. 33

D. 23
1147. How many paying stones, each measuring 2 1/2 m * 2 m are required to pave a rectangular court yard 30 m long and 16 1/2 m board?
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A. 95

B. 99

C. 100

D. 90

1148. LCM of 87 and 145 is_______?
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A. 435

B. 875

C. 48

D. 1305

1149. If the radius of a circle be reduced by 50% its area is reduced by:_________?
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A. 100%

B. 25%

C. 50%

D. 75%
1150. A man was employed on the promise that he will be paid the highest wages per day. The contract money to be paid was Rs. 1189. Finally he was paid only Rs. 1073. For how many days did he actually work?
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A. 39

B. 37

C. 35

D. 40

1151. The perimeter of a rhombus is 68 cm and one of its diagonals is 16 cm. Find its area?
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A. 220 cm<sup>2</sup>

B. 280 cm<sup>2</sup>

C. 240 cm2

D. 260 cm<sup>2</sup>

1152. Total area of the 64 small squares of aches board is 400cm2. There is 3cm wide border around the chess board. What is the length of each side of the chess board?
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A. 17cm

B. 26cm

C. 23cm

D. 20cm

1153. Find the H.C.F of 204, 1190 and 1445?
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A. 204

B. 34

C. 85

D. 17
1154. A wholesale tea dealer 408 kilograms, 468 kilograms and 516 kilograms of three different qualities of tea. He wants it all to be packed into boxes of equal size without mixing. Find the capacity of the largest possible box?
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A. 12

B. 24

C. 36

D. 50

1155. The area of a rectangle is thrice that of a square. The length of the rectangle is 40 cm and the breadth of the rectangle is (3/2) times of the square. The side of the square in cm is__________?
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A. 60

B. 15

C. 30

D. 20
1156. 5/8 * 2<sup>(2/5 5/4)
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A. 5-Jun

B. 1/5

C. 5-Apr

D. 5-Aug

1157. Bilals room has a floor of 8m by 4m. He decides to tile the floor with tiles of 25cm x 20 cm. How many tiles will he need?
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A. 6.4 tiles

B. 160 tiles

C. 640 tiles

D. 320 tiles

1158. Find the number of square tiles to cover the floor of a room measuring 4 m * 9 m leaving 0.25 m space around the room. A side of square tile is given to be 25 cms?
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A. 350

B. 450

C. 425

D. 476
1159. If the radius of a circle is increased to 3 times, then how many times will its circumference be increased?
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A. 9times

B. 3times

C. 1/3 times

D. 2times
1160. If the sum of two numbers is 55 and the H.C.F and L.C.M of these numbers are 5 and 120 respectively, then the sum of the reciprocal of the numbers is equal to___________?
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A. 601/55

B. 55/601

C. 120/11

D. 11/120