Question

th) 54 and 114
(i) 168 and 216
3. Find the HCF of the following numbers, using prime factorisation.
(a) 24. 40 and 56
(b) 36, 48 and 72
(c) 42, 63 and 105
(d) 112, 140 and 168
(e) 144.180 and 252
(1) 91.49 and 112
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Answer 1

Answer:

a . 24=2×2×2×3.

40=2×2×5

56=2×2×2×7

common=2×2=4ans.....

b . 36=2×2×2×3

48=2×2×2×2×3

72=2×2×2×2×3

common=2×2×2×3=24...