If 522x is a 3 digit no. with as a digit x. If the no.is divisible by 6, What is the value of the digit x is?
Choose the most appropriate option:
A) 1  B) 6  C) 4  D) 7  E) 9

Rationale: if a number is divisible by 6 , it must be divisible by both 2 and 3 in 522 x , to this number be divisible by 2 , the value of x must be even . so it can be 2,4 or 6 from given options 552 x is divisible by 3 , if sum of its digits is a multiple of 3 . 5 + 5 + 2 + x = 12 + x , if put x = 2 , 12 + 2 = 14 not a multiple of 3 if put x = 4 , 12 + 6 = 18 is a multiple of 3 if put x = 6 , 12 + 2 = 14 not a multiple of 3 the value of x is 6 . b
Answer: B