Question

20 21 22 23 24 25 26 27 28 29 30
From the set of numbers above, write down
(a) a multiple of 8,
(b) a square,
(c) a cube,
(d) two prime numbers,
(e) a factor of 156,
(1) the square root of 784,
(g) two numbers whose product is 567.
(CIE Paper 3, Nov 2003)​

Answer 1

Answer:

(a) 24

(b) 25

(c) 27

(d) 23 & 29

(e) 26

(f) 28

(g) 21 & 27

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Answer 2

Answer:

a) 24

b) 25

c) 27

d) 23,29

e) 28

f) 28

g) 21*27