Mathematics MCQs

Page No. 16

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?


a1 min


b2 min


c3 min


dNone


View Answer 1 min

What is the least number which when divided by 8, 12, 18 and 24 leaves the remainders 4, 8, 14 and 20 respectively?


a78


b68


c58


dNone


View Answer 68

Find the least number which when divided by 35 leaves remainder 25, when divided by 25 leaves remainder 15 and when divided by 15 leaves remainder 5?


a420


b515


c435


d518


View Answer 515

Find the greatest number of four digits which when divided by 10, 15, 21 and 28 leaves 4, 9, 15 and 22 as remainders respectively?


a9654


b9666


c9664


d9864


View Answer 9654

A heap of stones can be made up into groups of 21. When made up into groups of 16, 20, 25 and 45 there are 3 stones left in each case. How many stones at least can there be in the heap?


a7203


b2403


c3603


d4803


View Answer 7203

Find the least number which when divide by 2, 3, 4, 5 and 6 leaves 1, 2, 3, 4 and 5 as remainders respectively, but when divided by 7 leaves no remainder?


a210


b119


c126


d154


View Answer 119

Find the least number which when divided by 6, 7, 8, 9 and 10 leaves 1, 2, 3, 4 and 5 as remainders respectively, but when divided by 19 leaves no remainder?


a5073


b5016


c5054


d5035


View Answer 5035

Find the least multiple of 13 which when divided by 6, 8 and 12 leaves 5, 7 and 11 as remainders respectively?


a143


b169


c260


d221


View Answer 143

Three men start together to travel the same way around a circular track of 11 kilometers in circumference. Their speeds are 4, 5 and 8 kilometers per hour respectively. When will they meet at a starting point?


a11 hours


b12 hours


c220 hours


d22 hours


View Answer 11 hours

Find the least square number which is divisible by 10, 12, 15 and 18?


a1600


b900


c3600


d2500


View Answer 900

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