Question

if 4y9 is divisible by 11, where y is a digit, what is the value of y?
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Answer 1

Answer:

2

Step-by-step explanation:

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Answer 2

6543207

We know that if the difference of the sum of alternative digits of a number, i.e. digits which are in odd places together and digits in even places together, is divisible by 11 then that number is divisible by 11.

Here, sum of digits in odd places = 19 and sum of digits in even places = 8

∴ The difference of the sum of alternative digits of a number is 11, which is divisible by 11.

Sorry to answer here(-_-;)