If four times the number of permutations of n things 3 together is equal to five times the numb...
464 views · Published 11 October 2018 · 1:26 · Indexed 1 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If four times the number of permutations of n things 3 together is equal to five times the number of permutations of n-1 things 3 together, find n.
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