If 5x6 is exactly divisible by 3, then the least value of x is
We know that if sum of digits of a number is divisible by 3, then the number is divisible by 3.
Here,
5 + x + 6 = multiple of 3
∴ 11 + x = 0, 3, 6, 9, ….
Hence,
11 + x = 12
∴ x= 1
the least value of x is 1