Question

1. Show the prime factorisation of the following numbers using the factor tree.
a) 72 b) 108 c) 160 d) 216 e) 305
f) 920​

Answer 1

Answer:

72=2×2×2×3×3

108=2×2×3×3×3

160=2×2×2×2×2×5

216=2×2×2×3×3×3

305=5×61

920=2×2×2×5×23

Answer 2

920 = 2×2×2×5×23

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