EASY
JEE Main/Advance
IMPORTANT
Earn 100

In a shooting competition, a man can score 0, 2 or 4 points for each shot. Then the number of different ways in which he can score 14 points in 5 shots is

Important Questions on Permutation and Combination

MEDIUM
JEE Main/Advance
IMPORTANT
Six persons A, B, C, D, E and F are to be seated at a circular table. The number of ways this can be done if A must have either B or C on his right and B must have either C or D on his right is
EASY
JEE Main/Advance
IMPORTANT
The number of permutations which can be formed out of the letters of the word "SERIES" taking three letters together is
HARD
JEE Main/Advance
IMPORTANT
A box contains 6 balls which may be all of different colours or three each of two colours or two each of three different colours. The number of ways of selecting 3 balls from the box (if ball of same colour are identical) is
HARD
JEE Main/Advance
IMPORTANT
Five friends F1, F2, F3, F4, F5 book five seats C1, C2, C3, C4, C5, respectively of movie KABIL independently (i.e., F1 books C1, F2 books C2 and so on), In how many ways can they sit on these seats if no one wants to sit on his booked seat, more over F1 and F2 want to sit adjacent to each other.
EASY
JEE Main/Advance
IMPORTANT

The number of ways in which 5X's can be placed in the squares of the figure so that no row remains empty is:

Question Image

HARD
JEE Main/Advance
IMPORTANT
Sum of all the numbers that can be formed using all the digits 2, 3, 3, 4, 4, 4 is N, then N1111110 is equal to
MEDIUM
JEE Main/Advance
IMPORTANT
Six married couple are sitting in a room. Number of ways in which 4 people can be selected so that there is exactly one married couple among the four is N then N-225 is equal to
MEDIUM
JEE Main/Advance
IMPORTANT
Let Pn denotes the number of ways of selecting 3 people out of 'n' sitting in a row if no two of them are consecutive and Qn is the corresponding figure when they are in a circle. If Pn-Qn=6, then 'n' is equal to