Popular Questions
- A person is permitted to select at least one and at most n coins from a collection of (2n+1) distinct coins.
- nCr + n-1Cr + ........rCr =
- The number of ways in which four letters of the word MATHEMATICS can be arranged is given by
- If nC12 = nC6, then nC2 =
- If nC3 + nC4 > n+1C3, then
- There are 15 person in a party and each person shake hand with another, then total number of hand shakes is
- In how many ways can 5 red and 4 white balls be drawn from a bag containing 10 red and 8 white balls
- The least value of natural number n satisfying
- The value of
- In a mathematics paper there are three sections containing 4, 5 and 6 questions respectively.
- If 189C35 + 189Cx = 190Cx, then x is equal to
- If alpha = mC2, then alphaC2 is equal to
- If n is even and the value of nCr is maximum, then r =
- There are 12 volleyball players in a college, out of which a team of 9 players is to be formed.
- In how many ways can a girl and a boy be selected from a group of 15 boys and 8 girls
- If 2nC3 : nC2 = 44 : 3, then for which of the following values of r,
- If 2*nC5 = 9*n-2C5, then the value of n will be
- The value of 15C3 + 15C13 is
- On the occasion of Deepawali festival each student of a class sends greetings cards to the others.
- In a city no two persons have identical set of teeth and there is no person without a tooth.
- In a election the number of candidates is 1 greater than the persons to be elected.
- In how many ways can 21 English and Hindi books be placed in a row so that no two Hindi books are together
- In how many ways a team of 11 players can be formed out of 25 players, if
- Out of 6 books, in how many ways can a set of one n more books be chosen
