Find the number of different telephone numbers formed by taking 6 digits from `1,2,3,4,5,6,7`
163 views · Published 13 October 2018 · 2:14 · Indexed 28 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW Find the number of different telephone numbers formed by taking 6 digits from `1,2,3,4,5,6,7`
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