Question

find hcf and lcm by using the property in question no. 1. a. 27, 90​

Answer 1

What is the LCM of 27 and 90?
The lcm of 27 and 90 is 270.

Steps to find LCM

Find the prime factorization of 27
27 = 3 × 3 × 3
Find the prime factorization of 90
90 = 2 × 3 × 3 × 5
Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

LCM = 2 × 3 × 3 × 3 × 5
LCM = 270
Find least common multiple (lcm) of: 54 & 180 81 & 270 9 & 30 135 & 450 189 & 630 54 & 90 27 & 180 81 & 90 27 & 270 135 & 90 27 & 450 189 & 90 27 & 630

LCM Calculator

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Answer 2

HCF = 9

9×LCM

27×90 =270 ANSWER

9