Question

2. Find the HCF of the following numbers by prime factorization:
а) 21. 56, 35
24. 36. 56
(c 22, 66, 154
28. 42. 49. 63
le) 75, 125, 175, 250
100, 120, 150, 180
g 255, 340, 765, 425
(h) 192, 288, 576, 480
(i) 720, 960, 4840
1005, 2050, 3065
Find the LCM of following numbers:
(a) 24, 36, 48, 72
(b) 60, 90, 110
15, 60, 105
(d) 360, 168, 432
(e) 192, 288, 576, 480
420, 1365, 1470

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Answer 1

Answer:

To find the LCM, multiply all prime factors. But the common factors are included only once. 36 = 2 × 2 × 3 × 3 = 2² × 3². 14 = 2 × 7.

Answer 2

Answer:

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