Question

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Answer 1

Answer:

1) 81265 x 165 - 81265 x 65 = 13408725 - 5282225 = 8126500. (Ans)

2) (a) Factor of 20 = 1, 2, 4, 5, 10, 20.

Factor of 28 = 1, 2, 4, 7, 14, 28.

Therefore, common factor of 20 and 28 = 1, 2, 4. (Ans)

(b) Factor of 35 = 1, 5, 7, 35.

Factor of 50 = 1, 2, 5, 10, 25, 50.

Therefore, common factor of 35 and 50 = 1, 5. (Ans).

3) (a) 572 is divisible by 4. (Ans)

(b) 726352 is divisible by both 4 and 8. (Ans)

(c) 5500 is divisible by 4. (Ans)

(d) 6000 is divisible by both 4 and 8. (Ans)

4) (a) 1962 + 453 = 2415. (Ans)

(b) 1538 + 647 = 2185. (Ans)

Hope, it will help you.