HARD
11th ICSE
IMPORTANT
Earn 100
Find the number of combinations of four letters each that can be made from the letters of the word .
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Important Questions on Permutations and Combinations
HARD
11th ICSE
IMPORTANT
Find the number of permutations of four letters each that can be made from the letters of the word .
HARD
11th ICSE
IMPORTANT
The crew of an eight-oar boat is to be chosen from men of whom three can row on the stroke side only. Find the number of ways in which crew can be arranged.
HARD
11th ICSE
IMPORTANT
A committee of is to be formed from women and men. In how many ways this can be done if atleast five women have to be included in the committee? In how many of these the women are in majority?
HARD
11th ICSE
IMPORTANT
A committee of is to be formed from women and men. In how many ways this can be done if atleast five women have to be included in the committee? In how many of these the men are in majority?
MEDIUM
11th ICSE
IMPORTANT
There are points in a plane, no three of which are collinear except points all of which are on a straight line. How many straight lines can be formed?
MEDIUM
11th ICSE
IMPORTANT
There are points in a plane, no three of which are collinear except points all of which are on a straight line. How many triangles can be formed out of these points?
HARD
11th ICSE
IMPORTANT
Find the number of natural numbers which can be formed by using digits , repetition of digits not allowed. How many of these numbers are greater than ?
HARD
11th ICSE
IMPORTANT
A table has seats, being on one side facing the window and being on the opposite side. In how many ways can people be seated at the table if two people, and must sit on the same side?
