Permutations and Combinations
Find the number of strings of 5 letters that can be formed with the letters of the word PROPOSITION.
Connecting you to a tutor in 60 seconds.
Get answers to your doubts.
A coin is tossed 3 times and the outcomes are recorded. How many possible outcomes are there?
In a polygon, no three diagonals are concurrent. If the total number of points of intersection of diagonals interior to the polygon is 70, then the number of diagonals of the polygon is
d. none of these
Evaluate r!(n−r)!n!, when n = 5, r = 2.
How many words, with or without meaning, each of 3 vowels and 2 consonants can be formed from the letters of the word INVOLUTE?
A committee of 3 persons is to be constituted from a group of 2 men and 3 women. In how many ways can this be done? How many of these committees would consist of 1 man and 2 women?
If 6!1+7!1=8!x,find x
A number of 18 guests have to be seated, half on each side of a long table. Four particular guests desire to sit on one particular side and three others on the other side. Determine the number of ways in which the sitting arrangements can be made.
Find n if n−1P3:nP4=1:9.