Questions from Mathematics

41. Find the missing number in the series; 357, 180, 91, 46, –––, 11
(A) 21
(B) 22
(C) 23
(D) 24
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42. Mini is 5 years older than Sheeja who is 7 years younger to Lali. If Gowri who is 3 years younger to Lali is 25 old, how old is Mini?
(A) 40
(B) 33
(C) 26
(D) 20
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43. The number of triangles with any three of the length 1,4,6 and 8 cms, as sides is?
(A) 4
(B) 2
(C) 1
(D) 0
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44. A man jumped at a speed of 5 meters per second from a stationary boat and the boat moved off with the speed of 0.5 metre per second. How many times is the mass of the boat greater than of the man?
(A) 5.5 times
(B) 4.5 times
(C) 2.5 times
(D) 10 times
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45. The perimeters of circular and square fields are equal. Find the area in sq.m of the circular field if the area of the square field is 1936 sq. m?
A) 1536
B) 1727
C) 2848
D) 2464
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46. Two trains are running at 50 km/hr and 30 km/hr respectively in the same direction. Faster train completely passes a man sitting in the slower train in 5 seconds. What is the length of the faster train?
A)240/9 m
B)250/9 m
C)260/9 m
D)280/9 m
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47. If a trader reduces the selling price of an article from Rs 1400 to 1380, his profit decreases by 2%. Then cost price of the article is __?
A) 600
B) 800
C) 1000
D) 1200
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48. Which of the following trains is the fastest?
C) 800 m/min
B) 30 m/sec
C) 72 km/hr
D) All are equal
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49. The breadth of a rectangular field is 50% of its length. If the perimeter of the field is 900 m, what is the area of the field?
A) 45000 sq.m
B) 40000 sq.m
C) 41000 sq.m
D) 42000 sq.m
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50. A rectangular plot measuring 100 meters 50 meters is to be enclosed by wire fencing. If the poles of the fence are kept 5 meters apart. How many poles will be needed?
A) 55
B) 75
C) 57
D) 60
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