Question

FACTORISE THE FOLLOWING NUMBERS INTO PRIMES.
A.57, B.23, C.765 D.342 E. 117 F.250

Answer 1

Answer:

A. 3×19

B. 1

C. 12

Step-by-step explanation:

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Answer 2

Answer:

(i)

32 = 2 × 16

= 2 × 2 × 8

= 2 × 2 × 2 × 4

= 2 × 2 × 2 × 2 × 2

(ii)

57 = 3 × 19

(iii)

23 = 23 × 1

(iv)

150 = 2 × 75

= 2 × 3 × 25

= 2 × 3 × 5 × 5

(v)

216 = 2 × 108

= 2 × 2 × 54

= 2 × 2 × 2 × 27

= 2 × 2 × 2 × 3 × 9

= 2 × 2 × 2 × 3 × 3 × 3

(vi)

208 = 2 × 104

= 2 × 2 × 52

= 2 × 2 × 2 × 26

= 2 × 2 × 2 × 2 × 13

(vii)

765 = 3 × 255

= 3 × 3 × 85

= 3 × 3 × 5 × 17

(viii)

342 = 2 × 171

= 2 × 3 × 57

= 2 × 3 × 3 × 19