Class 11

Math

Algebra

Permutations and Combinations

Number of ways in which $18Rs$ can be distributed amongst four persons such that no body receives less than $3Rs$ is

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How many four digit numbers that are divisible by $4$ can be formed using the digits $0$ to $7$ if no digit is to occur more than once in any number?

The number of ways in which the letters of the word $_{′′}STRANGE_{′′}$ can be arranged so that the vowels may appear in the odd place, is

Find the number of ways in which $12$ different flowers can be arranged in a garland so that.

$7$ students of a hostel are to be allotted $7$ beds. Among them Praveen does not want a bed next to Nandu because Nandu snores.Then in how many ways can you allot the beds?

Word from the letters of the word $PROBABILITY$ are formed by taking all letters at a time.The probability that both $B_{′}s$ are not together and both $I_{′}s$ are not together is

Two variants of a test paper are distributed among 12 students. Number of ways of seating of the students in two rows so that the students sitting side by side by not have identical papers & those sitting in the same column have the same paper is :

In how many ways can $2$ identical green chairs and $4$ identical yellow chairs be arranged in a row?

Number of quadrilaterals that can be constructed from the vertices of a decagon (10 Sided polygons) such that none of the sides of the quadrilaterals is also a side of the decagon, is ?