Q31 of 124 Page 1

If a and b are relatively prime numbers, then what is their LCM?

We know that LCM = Product of the greatest power of each prime factor, involved in the numbers.


If a and b are two prime numbers, then a × b is their LCM.


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For what value of n, 2n x 5n ends in 5.

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If a and b are relatively prime numbers, then what is their HCF?

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Two numbers have 12 as their HCF and 350 as their LCM (True/False).

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The exponent of 2 in the prime factorisation of 144, is