q24
0. If 78*3945 is divisible by 11, where * is a digit, then * is equal to
- Option : D
- Explanation : A number is divisible by 11, if the difference of the sum of its digits at odd places and the sum of its digit of even " places, is either 0 or a number divisible by 11.∴ (5 + 9 + * + 7) - (4 + 3 + 8) = 0 or multiple of 11 ⇒ (21 + *) - 15 = 0 or mUltiple of 11. ⇒ 6 + * = 0 or multiple of 11. ⇒ * + 6 =a multiple of 11. ⇒*+6=11 ⇒ *=5
