Question

If 51×3 is a multiple of 9, where x is a digits, then what is the value of x ?​

Answer 1

Answer:

51x3 is divisible by 9. ∴ (9 + x) must be divisible by 9, ∴ ( 9 + x) must be equal to 0 or 9 or 18 or 27 or .... ∴ The required value of x = 0 or 9.

Answer 2

Answer:

Since, 51x3 is divisible by 9. ∴ (9 + x) must be divisible by 9, ∴ ( 9 + x) must be equal to 0 or 9 or 18 or 27 or .... ∴ The required value of x = 0 or 9.

Step-by-step explanation:

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