Saved Bookmarks
| 1. |
The total number of 5-digit numbers, formed by using the digits 1, 2, 3, 5, 6, 7 without repetition, which are multiple of 6, is (A) 36 (B) 48 (C) 60 (D) 72 |
|
Answer» Correct option is (D) 72 To make a no. divisible by 3 we can use the digits 1,2,5,6,7 or 1,2,3,5,7. Using 1,2,5,6,7, number of even numbers is = 4 x 3 x 2 x 1 x 2 = 48 Using 1,2,3,5,7, number of even numbers is = 4 x 3 x 2 x 1 x 1 = 24 Required answer is 72. |
|