Question

3×26 a multiple of 6?

Answer 1

3×26 is a multiple of 6

3 + x + 2 + 6 is a multiple of 3

⇒ 11 + x = 0, 3, 6, 9, 12, 15, 18,21,

⇒ x = -11, -8, -5, -2, 1, 4, 7, 10, ….

Since, x is a digit

x = 1, 4 or 7