If 72354X2 is a number divisible by both 3 and 9 what will be the possible value of X?
A3
B4
C1
D9
Answer:
B. 4
Read Explanation:
A number is divisible by 9,if the sum of all digit is divisible by 9.
A number is divisible by 3,if the sum of all digit is divisible by 3.
So here we have to consider the number X in which the sum is 9
72354X2 = 7 + 2 + 3+ 5 + 4 +X + 2
= 23 + X
So X = 4
