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- Determine n if ^(2n)C3:^nC2=12:1
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- Determine n if ^(2n)C3:^nC3=11:1
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- How many chords can be drawn through 21 points on a circle?
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- In how many ways can a team of 3 boys and 3 girls be selected from 5 b...
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- Find the number of ways of selecting 9 balls from 6 red balls, 5 white...
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- Determine the number of 5 card combinations out of a deck of 52 cards ...
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- In how many ways can one select a cricket team of eleven from 17 playe...
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- A bag contains 5 black and 6 red balls. Determine the number of ways i...
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- In how-many ways can a student choose a programme of 5 courses if 9 co...
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- Prove that ^"" nCr=^nC(n-r)
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- If ^nC10=^nC12 find ^23Cn
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- Find the value of ^10C4
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- Show that ^10C4=^9C(4)+^9C3
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- prove the result ^(n+1)Cr=^nC(r-1)+^nCr
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- Given that ^nCr=(n!)/(r!(n-r)!) What are the values of ^28C(2r) and ^2...
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- Given that ""^nCr=(n!)/(n!(n-r)!) if ""^28C(2r): ^24C(2r-4)=225:11 pr...
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- Prove that (""^nPr)/(""^nCr)=r!
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- If ^28pr=6^28Cr, prove that r = 3
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- If p(n,2)=272, find n
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- For the above n, if (n,r) =136, find r
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