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KC SINHA-PERMUTATIONS AND COMBINATIONS - FOR COMPETITION-Exercise
- Let E=[]1,2,3,4] and F=(12) Then the number o onto functions from E to...
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- The number of circles that can be drawn out of 10 points of which 7 ar...
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- A box contains two white balls, three black balls nd four red balls. T...
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- The number of words that can be formed by using the letters of the wor...
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- The number of ways in which 20 one rupee coins can be distributed amon...
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- In a group of boys, two boys are brothers and in this group 6 more boy...
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- A five-digit number divisible by 3 is to be formed using the digits...
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- If nC(r-1)=36, nCr=84 and nC(r+1)=126, then (a) n=8,r=4 (b) n=9,r=3 ...
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- The number of ways of distributing 50 identical things among 8 persons...
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- Let xyz=105 where x, y,z in N. Then number of ordered triplets (x, y...
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- A committtee of three people is to be chosen from 4 married couples. T...
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- Find the number of ways in which four particular persons A, B, C, D an...
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- The number of ways in which 10 persns can sit around a table so that t...
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- How many different signals can be made by hoisting 6 differently colou...
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- If n(B)=p,n(B)=q and total number of functions from A to B is 343, the...
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- If n(B)=2 and the number of functions from A and B which are onto is 3...
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- The number of ordered triplets of positive integers which satisfy the ...
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- Number of ways in which 5 boys and 4 girls can be arranged on a circul...
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- The number of six digit numbers that can be formed from the digits 1,2...
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- Let A={x1,x2,x3,x4,x5},B={y1,y2,y3,y4}, Function f is defined from A ...
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