Question

if 15x2 is a multiple of 4 then what is the value of x
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Answer 1

Answer:

Since 24x is a multiple of 3, its sum of digits 6+x is a multiple of 3;

So, 6+x is one of these numbers: 0,3,6,9,13,15,18,….

Since x is a digit, it can only be that 6+x=6 or 9 or 12 or 15.

Therefore, x=0 or 3 or 6 or 9.

Thus, x can have any of four different values.

Step-by-step explanation:

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