The smallest number which when diminished by 7, is divisible 12, 16, 18, 21 and 28 is:
Required number = L.C.M. of $\left(12,16, 18, 21, 28\right)$ + 7
= 1008 + 7
= 1015
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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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252 can be expressed as a product of primes as: |
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The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively, is: |
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Find the highest common factor of 36 and 84. |
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What is the smallest number which when diminished by 12, is divisible 8, 12, 22 and 24? |
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The H.C.F. of two numbers is 23 and the other two factors of their L.C.M. are 13 and 14. The larger of the two numbers is: |
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504 can be expressed as a product of primes as |
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The L.C.M. of two numbers is 48. The numbers are in the ratio 2 : 3. Then sum of the number is: |
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What is the HCF of 1/3,2/3, and 1/4 ? |
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The H.C.F. of two numbers is 5 and their L.C.M. is 150. If one of the numbers is 25, then the other is: |
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