The total number of ways in which a selection(one or more) can be made of `p+q+r` things of whi...
188 views · Published 12 October 2018 · 2:52 · Indexed 8 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW The total number of ways in which a selection(one or more) can be made of `p+q+r` things of which p are all alike, q all alike, r all alike is `( p + 1 ) ( q + 1 ) ( r + 1 )-1` II: The number of permutations of 'n' things taken together when 'p' of the things are alike of one kind, 'q' of them alike of a second kind, 'r' of them alike of a third kind and the rest all different is `(n!)/(p!q!r!3!)` Which of the above statement is true?
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