In the above problem, if the first digit cannot be 0, then
| A. | 42100 |
| B. | 421200 |
| C. | 42400 |
| D. | 421600 |
Answer : B Explanation : n=26x 25x 9x 9x 8=421200. |
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Option: A Explanation : Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. |
