Question

1. Find the LCM of the given numbers by prime factorisation method:
(i) 28,98
(ii) 36, 40, 126 (iii) 108, 135, 162
(iv) 24, 28, 196.​

Answer 1

Answer:

1) 28 = 2*2*7 = 2² * 7¹

98 = 2*7*7 = 2¹ * 7²

Therefore its lcm will be 196

2) 2520 as i told previous

3) 108 = 2*2*3*3*3 = 2² * 3³

135 = 5*3*3*3. = 5¹ * 3³

162= 2*3*3*3*3 = 2 * 3^4

Therefore its lcm will be 1620

4) 24= 2*2*2*3 = 2³ * 3¹

28= 2*2*7. = 2² * 7¹

196= 2*2*7*7 = 2² * 7²

Therefore its lcm will be 1176

Hope it helps please mark brainliest as it took so much time :(