The first name of a person consists of 9 letters in which one letter occurs more than once and
151 views · Published 13 October 2018 · 2:15 · Indexed 30 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW The first name of a person consists of 9 letters in which one letter occurs more than once and the other letters are different. If the number of permutations of the letters of his name taken all at a time be 15120, find the number of times the like letter occurs.
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