mathematics MCQs – Page 43

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 Review each marked answer and report any item that may be outdated or unclear.

841. 43% of 784 = ________?
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A. 339.12

B. 312.73

C. 337.12

D. 373.12

842. 7394 1236 4652 = ________?
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A. 1706

B. 1496

C. 1606

D. 1506
843. A man can row 6 kmph in still water. When the river is running at 1.2 kmph, it takes him 1 hour to row to a place and black. How far is the place?
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A. 3.12 km

B. 2 km

C. 2.88 km

D. 3 km

844. There is 60% increase in an amount in 6 years at S.I. What will be the C.I. of Rs. 12,000 after 3 years at the same rate?
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A. Rs. 2160

B. Rs. 6240

C. Rs. 3972

D. Rs. 3120

845. The number obtained by interchanging the two digits of a two-digit number is less than the original number by 45. If the sum of the two digits of the number so obtained is 13, then what is the original number?
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A. Either (a) or (b)

B. 83

C. 94

D. 49

E. None of these

846. A man can row 30 km downstream and 20 km upstream in 4 hours. He can row 45 km downstream and 40 km upstream in 7 hours. Find the speed of man in still water?
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A. None of these

B. 12.5 kmph

C. 10 kmph

D. 15 kmph

E. 12 kmph

847. A bag contains equal number of Rs.5, Rs.2 and Re.1 coins. If the total amount in the bag is Rs.1152, find the number of coins of each kind?
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A. 288

B. 432

C. 72

D. 144

E. None of these

848. If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 50, what is the compound interest on the same sum at the rate and for the same time?
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A. Rs. 54.25

B. Rs. 60

C. Rs. 51.25

D. Rs. 52

849. Three consecutive odd integers are in increasing order such that the sum of the last two integers is 13 more than the first integer. Find the three integers?
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A. 13, 15, 17

B. 7, 9, 11

C. 9, 11, 13

D. 11, 13, 15

E. None of these

850. (64 + 9 + 9) / (2 * 20 + 1) = _______?
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A. 1

B. 2

C. 2-Mar

D. 2-May

851. How many liters of oil at Rs.40 per liter should be mixed with 240 liters of a second variety of oil at Rs.60 per liter so as to get a mixture whose cost is Rs.52 per liter?
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A. 160 liters

B. 110 liters

C. 180 liters

D. 120 liters

852. On a sum of money, the S.I. for 2 years is Rs. 660, while the C.I. is Rs. 696.30, the rate of interest being the same in both the cases. The rate of interest is________?
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A. 12%

B. 10%

C. 10.50%

D. None of these
853. A boat running upstream takes 8 hours 48 min to cover a certain distance while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and the speed of water current respectively?
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A. Cannot be determined

B. 3:01

C. 2:01

D. 8 : 3
854. The sum of five consecutive even numbers of set x is 440. Find the sum of a different set of five consecutive integers whose second least number is 121 less than double the least number of set x?
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A. 248

B. None of these

C. 236

D. 228

E. 240
855. In how many different ways can the letters of the word OPTICAL be arranged so that the vowels always come together?
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A. 720

B. 4320

C. 120

D. 2160

856. A can give B 100 meters start and C 200 meters start in a kilometer race. How much start can B give C in a kilometer race?
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A. 777.52 m

B. 111.12 m

C. 756.34 m

D. 888.88 m

857. (0.456 * 0.456 0.228 * 0.228) / (0.456 + 0.228) = ________?
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A. 0.228

B. 0.456

C. 1

D. 0.684

858. 3648.24 + 364.824 / ? 36.4824 = 3794.1696
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A. 3

B. 4

C. 5

D. 2
859. The cost of 10 kg of apples is equal to the cost of 24 kg of rice. The cost of 6 kg of flour equals the cost of 2 kg of rice. The cost of each kg of flour is Rs.20.50. Find the total cost of 4 kg of apples, 3 kg of rice and 5 kg of flour?
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A. Rs.849.40

B. Rs.901.60

C. Rs.877.40

D. None of these

E. Rs.815.20

860. The speed of a boat in still water is 60kmph and the speed of the current is 20kmph. Find the speed downstream and upstream?
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A. 40, 60 kmph

B. 80, 40 kmph

C. 50, 55 kmph

D. 35, 25 kmph