MEDIUM
11th ICSE
IMPORTANT
Earn 100
Find the number of all five digit numbers which have atleast one digit repeated.
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Important Questions on Permutations and Combinations
MEDIUM
11th ICSE
IMPORTANT
Show that the number of permutations of different things taken all at time in which particular things are never together is .
MEDIUM
11th ICSE
IMPORTANT
Find the sum of all numbers greater than formed by using digits no digit being repeated in any number.
HARD
11th ICSE
IMPORTANT
How many different digit numbers can be made with fours, twos and threes?
HARD
11th ICSE
IMPORTANT
Find the number of combinations of four letters each that can be made from the letters of the word .
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?
