The number 974581297426 is divisible by:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e.11.
Rule: Alternate sum of digits (difference between sums of digits at odd and even places)
Odd positions (1st, 3rd, etc.): 9 + 4 + 8 + 2 + 7 + 2 = 32
Even positions (2nd, 4th, etc.): 7 + 5 + 1 + 9 + 4 + 6 = 32
|32 – 32| = 0, which is divisible by 11