2) 1, 2, 3, 4, 5, 6 व 7 हे अंक फक्त एकदाच वापरू व अंकांची पुनरावृत्ती न करता 3 अंकी किती संख्य
तयार होतील?
1) 210
2) 42
3) 70
4) 200
Answers
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1) 210
Step-by-step explanation:
As one number out of the seven is selected for the first digit , the second digit can be selected in 6 different ways.
similary , the third digit in 5 ways.
So , 7 * 6 * 5 ways in total . 210 ways
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