Permutations of Distinct Objects

JEE Main Mathematics · Permutations and Combinations · 5 questions, latest first

• The number of 4 -letter words, with or without meaning, each consisting of two vowels and two consonants that can be formed from…20266 April, Shift 1 · Q7
• Three persons enter in a lift at the ground floor. The lift will go upto 10^th floor. The number of ways, in which the three…202628 January, Shift 2 · Q23
• The number of 4 -letter words, with or without meaning, each consisting of 2 vowels and 2 consonants, which can be formed from…20236 April, Shift 2 · Q22
• If ^2 n+1 P_n-1:^2 n-1 P_n=11: 21, then n^2+n+15 is equal to:202331 January, Shift 2 · Q85
• The number of square matrices of order 5 with entries from the set {0,1}, such that the sum of all the elements in each row is 1…202324 January, Shift 2 · Q66