Question

1. Find the L.C.M. of the following numbers using prime factorisation method :
o 18, 24
(ü) 36, 45
(ii) 48, 72
(iv) 63, 105
lo) 27, 54, 90 (vi) 36, 54, 81 (vii) 60, 75, 80, 90 (viii) 48, 60, 72,96
ICM of the following using common division method :​

Answer 1

Step-by-step explanation:

1. 18, 24

The prime factors for 18 = 2×2×3

The prime factors for 24 = 2×2×2×3

Therefore the LCM of 18, 24 = 2×2×2×3×3

= 70.

2. 35, 45

The prime factors of 35 = 5×7

The prime factors of 45 = 3×3×5

Therefore the LCM of 35, 45 = 5×7×3×3

= 315.

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