Count the number of positive integers gr...

Count the number of positive integers greater than 7000 and less than 8000 which are divisible by 5, provided that no digits are repeated.

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FULL MARKS-COMBINATORICS AND MATHEMATICAL INDUCTION-ADDITIONAL QUESTIONS

Count the number of positive integers greater than 7000 and less than ...
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If the letter of the word 'RACHIT' are arrenged in all possible ways a...
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Count the number of positive integers greater than 6000 and less than ...
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Find the number of integers greater than 7000 that can be formed with ...
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How many words (with or without dictionary meaning ) can be made from ...
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How many automobile license plates can be made, if each plate contains...
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If (n!)/(3!(n-4)! and (n!)/(5!(n-5)! are in the ratio 5:3 find the val...
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How many 3-digit even numbers can be made using the digits 1,2,3,4,6,7...
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If ""^(n-1)P(3): ""^(n)P(4)=1:9 find n.
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Out of 18 points in a plane, no three are in the same line except five...
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We wish to select 6 person from 8 but , if the person A is choosen , t...
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How many 3-digit numbers can be made using digit 1,2,3,4,6,7 if no dig...
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Find the number of 4-digit numbers that can be formed using the digits...
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Iff ""^(5)P(r)=""^(6)P(r-1) find r.
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How many words, with or without meaning , can be made from the letters...
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A group consists of 4 girls and 7 boys. In how many ways can a team of...
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A committee of 6 is to be choosen from 10 men and 7 women so as to con...
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Using the digits 1,2,3,4,5,6,7 a number of 4 different digits is forme...
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If ""^(22)P(r+1):^(20)P(r+2)=11:52, find r.
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If ""^(nP(r)=""^(n)P(r+1) and ""^(n)C(r)=""^(n)C(r-1) find n and r.
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A committee of 7 peoples has to be formed from 9 men and 4 women . In ...
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