Question

Checkpoint 3
Find the LCM of each of the following group of numbers using prime factorisation method
(a) 12,30
(b) 90, 120
(c) 108, 144
(d) 96, 120
(e) 76,57
(f) 72,90
(g) 70, 105
(h) 20, 30, 40
(i) 72,96, 108
(j) 75, 90, 125
Find the LCM of each of the following group of numbers using common division method
(a) 48, 72
(b) 75,90
(c) 24, 36, 54
(d) 72, 90, 120
(e) 32, 60, 84
(f) 56, 84, 133
Find the smallest number that is exactly divisible by 12, 15 and 20.
ind the smallest number which leaves a remainder of 5 when divided by 24, 32 and 4
) Skill Build 3
id the smallest perfect square that is divisible by 15, 20 and 25.​

Answer 1

Answer:

you can solve this by following formula

Answer 2

Answer:

You can solve this by following formula