Permutations and Combinations

JEE Main · Mathematics · 13 past questions

These are the board's own papers. 198 more board questions reprinted in the books we use in class are for signed-in students: sign in.

1 of 13 · show all

1. Q10 2022 30 Jul Shift 2

   The sum of all values of $n$, for which ${}^{n-1}C_4-{}^{n-1}C_3-\frac{5}{4}\,{}^{n-2}P_2<0$, is

   Try it →