1.

For what value of digit x, is :1×5 divisible by 3 ?

Answer»

1×5 is divisible by 3 

=> 1 + x + 5 is a multiple of 3 

=> 6 + x = 0, 3, 6, 9,

=> x = -6, -3, 0, 3, 6, 9

Since, x is a digit

x = 0, 3, 6 or 9



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