Question

The three digit number 3 multipley 1 is divisible by 9 , find the value if x and number ?

Answer 1

Answer:

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Since, 3x1 is divisible by 9, the sum of its digits i.e. 3+x+1

should be divisible by 9.

Thus, (4+x) should be divisible by 9.

This is possible when 4+x=9 or 18.

Since x is a single digit number,

⇒4+x=9

⇒x=5

Answer 2

Answer:

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