Ncert class11 maths ch7 extra question

 NCERT CLASS 11 MATHS 
EXTRA QUESTION

CHAPTER -7PERMUTATIONS AND COMBINATION

Questions

Q. 1) Find n when n-1 P3:n P 4=1:9.

Q. 2) Find the number of diagonals of an octagon. 

Q. 3) Show that 2^16 divides 32! 

Find the highest power of 2 that divides 32! 

Q. 4) In how many ways can 5 girl and 3 boys be seated in a row so that no two boys are together. 

Q. 5) Prove that the product of 2n consecutive negative integer is divisible by (2n)!. 

Q. 6) How many words, with or without meaning, each of 2 vowels and 3 consonants can be formed from the letters of the word 'DAUGHTER'.