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 ?
4
10
15
16
Additional Questions
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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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In a division problem, the divisor is twenty times the quotient and five times the remainder. If remainder is 16, the number will be: |
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The L.C.M. of two numbers is 4800 and their G.C.M. is 160. If one of the numbers is 480, then the other number is: |
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The L.C.M. of two numbers is 140. If their ratio is 2:5, then the numbers are: |
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If a number is exactly divisible by 85, then what will be the remainder when the same number is divided by 17? |
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