Question

Which of the following expression has prime factors?
24 = 2 x 3 x 4
56 = 7 x 2 x 2 x 2
70 = 7 x 10
54 = 2 x 3 x 9​

Answer 1

Answer:

56

Step-by-step explanation:

7=prime no.

2=prime no.

56=7×2×2×2

Answer 2

Answer:

24 = 2 × 3 × 4 Since 4 is composite, prime factorisation has not been done.

(b) 56 = 7 × 2 × 2 × 2 Since ail the factors are prime, prime factorisation has been done.

(c) 70 = 2 × 5 × 7 Since all the factors are prime, prime factorisation has been done.

(d) 54 = 2 × 3 × 9 Since 9 is composite, prime factorisation has not been done.

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