In how many of the permutations of 12 th...

In how many of the permutations of 12 things taken 6 at a time will 3 particular things (a) always occur b) never occur ?

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In how many of the permutations of 12 things taken 3 at time will one particular thing (a) always occur (b) never occur ?

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CHHAYA PUBLICATION-PERMUTATION AND COMBINATION -EXERCISE 7 A ( Short Answer Type Questions )

In how many ways can 5 first year students and 3 second year students ...
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In how many of the permutations of 12 things taken 3 at time will one...
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In how many of the permutations of 12 things taken 6 at a time will 3 ...
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In how many different ways can the letters of the word FOOTBALL be a...
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How many different arrangements are possible with the letters of the w...
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How many diffferent words can be formed taking all the letters in the ...
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How many arrangements can be made out of the letters of the word COMMI...
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Find the number of ways in which the letters of the word ORION can be ...
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Show that the letter of the word INSURANCE can be arranged in twicw ...
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How many different arrangements can be made out of the letters of the ...
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The first name of a person consists of 9 letters in which one letters ...
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How many numbers of six digits can be formed out of the digits of the ...
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How many numbers of 8 digits can be formed with the digits 4,2,2,2,3,3...
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How many numbers greater than a lac be formed with the digits 0,2,5,2,...
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How many 6- digits even numbers can be formed from 2,3,5,3,4,5 alone ...
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How many numbers lying between 3000 and 4000 can be formed with the d...
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In how many different ways can the four subjects be arranged in 5 peri...
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Find the rank of the word LATE when its letters are arranged as in a ...
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A code signal uses digit - letters - digit combinations but 0 and 1 ar...
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Find the rank of the word Mother when its letters are arranged as in a...
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