26 JEE Main 2021 Permutation Combination previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2021 previous-year questions from the Permutation Combination chapter of Mathematics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Permutation Combination chapter hub.
The number of three-digit even numbers, formed by the digits 0 , 1 , 3 , 4 , 6 , 7 if the repetition of digits is not a…
The total number of numbers, lying between 100 and 1000 that can be formed with the digits 1 , 2 , 3 , 4 , 5 , if the r…
The total number of two digit numbers ' n ' , such that 3 n + 7 n is a multiple of 10 , is ___ .
A number is called a palindrome if it reads the same backward as well as forward. For example 285582 is a six digit pal…
The sum of all the elements in the set { n ∈ { 1 , 2 , … … , 100 } ∣ H.C.F. of n and 2040 is 1…
Let n be a non-negative integer. Then the number of divisors of the form 4 n + 1 of the number 10 10 · 11 11 ·…
If the sides A B ,   B C and C A of a triangle A B C have 3 ,   5 and 6 interior points respectively, then th…
A natural number has prime factorization given by n = 2 x 3 y 5 z , where y and z are such that y + z = 5 and y - 1 + z…
Team A ' ' consists of 7 boys and n girls and Team B ' ' has 4 boys and 6 girls. If a total of 52 single matches can be…
The sum of all 3 -digit numbers less than or equal to 500 , that are formed without using the digit 1 and they all are…
Log in to unlock the full list, track what you've solved, and practice on the TCS iON-style CBT player. It's free.