Question

2. What is the greatest number that divides 30, 53,99 to leave the same reminder?
(a) 21
(b) 13
(c) 19
(d) 23
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Answer 1

Answer:

70

Explanation:

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Answer 2

Answer

The correct option is (d)

Explaination

1. First we divide all 3 nos. with first option. We'll get remainders as 7, 11 and 15 which are not same.

2. We'll divide all 3 nos. with second option, we'll get remainders as 4, 1 and 8 respectively which are not equal.

3. We'll divide all 3 nos. with third option, we'll get remainders as 11, 15 and 4 respectively which are not equal.

4. We'll divide all 3 nos. with fourth option, we'll get remainders as 7, 7 and 7 respectively which are equal.

So a,b and c are having unequal remainders bit d has same remainders so answer is d.