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Six bells commence tolling together and toll at the intervals of 2,4,6,8,10,12 seconds resp. In 60 minutes how many times they will toll together.
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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 reciprocals of the numbers is equal to:
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Three different containers contain 496 litres, 403 litres and 713 litres of mixtures of milk and water respectively. What biggest measure can measure all the different quantities exactly ?
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Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ?
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Four different electronic devices make a beep after every 30 minutes, 1 hour, 3/2 hour and 1 hour 45 minutes respectively. All the devices beeped together at 12 noon. They will again beep together at:
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The number of prime factors of (3 x 5)12 (2 x 7)10 (10)25 is:
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What least value must be assigned to * so that the number 63576*2 is divisible by 8?
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Which of the following numbers is exactly divisible by 24 ?
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The number nearest to 15207, which is divisible by 467, is:
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The smallest number, which is a perfect square and contains 7936 as a factor is:
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