HARD
11th CBSE
IMPORTANT
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If the permutations of a,b,c,d,e taken all together be written down in alphabetical order as in dictionary and numbered, find the rank of the permutation debac

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Important Questions on Permutations

EASY
11th CBSE
IMPORTANT
Find the total number of ways in which six ‘+’ and four ‘-’ signs can be arranged in a line such that no two ‘-’ signs occur together. (Write only numerical value)
MEDIUM
11th CBSE
IMPORTANT
How many arrangements can be made by the letters of the word “INTERMEDIATE” so that vowels always occupy even places of the word.
 
MEDIUM
11th CBSE
IMPORTANT
How many arrangements can be made by the letters of the word “INTERMEDIATE” so that the relative order of vowels and consonants do not alter?
EASY
11th CBSE
IMPORTANT
The letters of the word ZENITH are written in all possible orders. How many words are possible if all there words are written out as in a dictionary? 
HARD
11th CBSE
IMPORTANT
The letters of the word ZENITH are written in all possible orders. What is the rank of the word ZENITH?
EASY
11th CBSE
IMPORTANT
In how many ways can 4 letters be posted in 5 letter boxes?
EASY
11th CBSE
IMPORTANT
Write the number of 5 digit numbers that can be formed using digits 0,1 and 2.
EASY
11th CBSE
IMPORTANT
In how many ways 4 women draw water from 4 taps, if no tap remains unused? (Write only numerical value)