| 1. |
If the number 42573 * is exactly divisible by 72, then the minimum value of * is: |
|||||||||
Answer: Option C Explanation: 72 = 9 x8, where 9 and 8 are co-prime. The minimum value of x for which 73x for which 73x is divisible by 8 is, x = 6. Sum of digits in 425736 = (4 + 2 + 5 + 7 + 3 + 6) = 27, which is divisible by 9.
|
Required value of * is 6.Post your comments here:
Name *:
Email : (optional)
Your comments will be displayed only after manual approval.