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Method of Finding LCM

If a and b ar...

Question

If a and b are two prime numbers then find LCM(a, b).

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Solution

If a and b are prime numbers,then they don't have any common factor.

a = 1 × a
b = 1 × b

HCF of a and b = 1

LCM $\times$ HCF = Product of two number

LCM(a,b) $\times$ HCF (a,b) = ab

LCM(a,b) $\times$ 1 = ab

LCM(a,b) = ab

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Q. Two positive integers a and b can be written as a = x³y² and b = xy³, where x and y are prime numbers. Find HCF(a, b) and LCM(a, b).

Q. If two positive integers m and n are expressible in the form m = a² b³ and n = a³b², where a, b are prime numbers, then HCF (m, n) = _______ and LCM (a, b) = _______.

If a and b are two prime numbers then find HCF(a, b).

Q. a and b are two co-primes. Which of the following is/are true?
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(d) Neither (a) nor (b)

H C F (a, b) = 15

L C M (a, b) = 1800

a = 30

b

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