Question

Checkpoint 3
(a) 12,30
(d) 96, 120
e) 70, 105
0) 75, 90, 125
Find the CM of each of the following group of numbers using prime faciation method.
(b) 90, 120
(c) 168,144
le) 75, 57
(1) 72,90
(h) 20,30,40
0) 72,96, 108
Find the LCM of each of the following group of numbers using common division method.
(b) 75,90
(c) 24,36,54
(e) 32, 60, 84
(f) 56, 84, 133
Find the smallest number that is exactly divisible by 12, 15 and 20. Cm - 6
Find the smallest number which leaves a remainder of 5 when divided by 24,32 and 42.
(a) 48, 72
(d) 72, 90, 120​

Answer 1

Answer:

LCM BY PRIME FACTORISATION:-

b)360

c)1008

d)1425

e)360

f)120

g)1728

LCM BY COMMON DIVISION METHOD:-

b)450

c)216

e)3360

f)3192