MEDIUM
JEE Main/Advance
IMPORTANT
Earn 100

The number of ways of arranging the letters AAAAA, BBB, CCC, D, EE & F in a row if the letter C are separated from one another is

50% studentsanswered this correctly

Important Questions on Permutation and Combination

EASY
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Mathematics>Chapter 8 - Permutation and Combination>Exercise-2>Q 51
The number of non-negative integral solutions of x1+x2+x3+x4≤n (where n is a positive integer) is
HARD
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Mathematics>Chapter 8 - Permutation and Combination>Exercise-2>Q 52
There are 10 seats in the first row of a theatre of which 4 are to be occupied. The number of ways of arranging 4 persons so that no two persons sit side by side is
EASY
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Mathematics>Chapter 8 - Permutation and Combination>Exercise-2>Q 53
C3650 is divisible by
MEDIUM
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Mathematics>Chapter 8 - Permutation and Combination>Exercise-2>Q 54
Value of Pn2n is equal to :-
MEDIUM
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Mathematics>Chapter 8 - Permutation and Combination>Exercise-2>Q 55
The number of ways in which 200 different things can be divided into groups of 100 pairs, is
HARD
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Mathematics>Chapter 8 - Permutation and Combination>Exercise-3>Q 1
If ∑i=120Ci-120Ci20+20Ci-13=k21, then k equals
HARD
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Mathematics>Chapter 8 - Permutation and Combination>Exercise-3>Q 2
The number of seven-digit integers, with sum of the digits equal to 10 and formed by using the digits 1, 2 and 3 only, is
HARD
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Mathematics>Chapter 8 - Permutation and Combination>Exercise-3>Q 3
Let S=1,2,3,4. The total number of unordered pairs of disjoint subsets of S is equal to