Question

if 2a25 is a multiple of 9 ,where is a digit ,what are the possible values of a​

Answer 1

Answer:

0 & 9

Step-by-step explanation:

Divisibility test for 9 is to add the digits and see whether the sum is a multiple of 9.

Here 2a25,

2 + a + 2 + 5 = 9 + a

9 is a multiple. So a can be 0.

Then, 9 + a = 9 + 0 = 9.

18 is also the nearest multiple. So a can also be 9.

Then 9 + a = 9 + 9 = 18.

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