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Q.

If the number $27 x 5$ is divisible by $9$ then the largest digit to replace ‘ $x$ ’ is

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a

7

b

1

c

9

d

4

answer is C.

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Detailed Solution

By divisibility rule of 9

$2 + 7 + x + 5 = 9$ multiple.

$14 + x = 9$ multiple

Next 9 multiple is 18

$14 + x = 18 \Rightarrow x = 4$

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