Recent questions tagged permutations and combinations

+1 vote

1 answer

Find the number of positive integers which can be formed by any number of digits 0, 1, 2, 3, 4 and 5 but using each digit not more

asked Apr 6, 2019 in JEE by kratos

+1 vote

1 answer

The number of rectangles that can be obtained by joining four of the twelve vertices of a 12-sided regula

asked Apr 6, 2019 in JEE by kratos

+2 votes

1 answer

How many functions can be defined from a set A containing 5 elements to a set B having 3 elements. How many these are surjective functions.

asked Apr 5, 2019 in JEE by kratos

+3 votes

1 answer

Let n ≥4 be a positive integer and let L1 , L2 ,......, Ln be the lengths of the sides of arbitrary n–

asked Apr 5, 2019 in JEE by kratos

+2 votes

1 answer

A bag contains 8 red *****, 11 blue ***** and 6 green *****. Find the percentage of blue ***** in the bag.

asked Apr 5, 2019 in Class 10 by kratos

+3 votes

1 answer

Let A = {x I x is a prime number and x < 30}. The number of different rational numbers whose numerator and denominator

asked Apr 4, 2019 in JEE by kratos

+2 votes

1 answer

A two digit number is to be formed from the digits 0,1,2,3,4, without repetition of the digits.

asked Apr 4, 2019 in Mathematics by kratos

+1 vote

1 answer

Five persons are to address a meeting. If a specified speaker is to speak before another specified speaker, find the number of ways

asked Apr 4, 2019 in JEE by kratos

+1 vote

1 answer

(a) (a2 – b2) is divisible by 3

asked Apr 4, 2019 in JEE by kratos

+2 votes

1 answer

How many straight lines can be formed from 10 points if no three of them are collinear.

asked Apr 3, 2019 in Class 12 by kratos

+3 votes

1 answer

Write a program to count the number of vowels and consonants in a string.

asked Apr 3, 2019 in Class 12 by kratos

+1 vote

1 answer

A man has 7 relatives in which 4 are ladies and 3 are gentlemen. His wife also has 7 relatives in which 3 are ladies and 4 are gentlemen.

asked Apr 3, 2019 in JEE by kratos

+1 vote

1 answer

Find the number of diagonals of a polygon of 20 sides.

asked Apr 2, 2019 in Class 12 by kratos

+1 vote

1 answer

Determine the number of 5 card combinations out of a deck of 52 cards if there is exactly one ace in each combination.

asked Apr 2, 2019 in Class 11 by kratos

+2 votes

1 answer

Number of permutations 1, 2, 3, 4, 5, 6, 7, 8 and 9 taken all at a time are such that the digit.

asked Apr 1, 2019 in Mathematics by kratos

+2 votes

1 answer

Find the value of n if nP5 = 20 nP3

asked Apr 1, 2019 in JEE by kratos

+1 vote

1 answer

There are 720 permutations of the digits 1, 2, 3, 4, 5, 6 suppose these permutations are arranged

asked Apr 1, 2019 in JEE by kratos

+1 vote

1 answer

Two identical discs of mass m and radius r are arranged as shown in the figure. If α is the angular acceleration

asked Mar 31, 2019 in JEE by kratos

+1 vote

1 answer

Five ***** of different colours are to be placed in three boxes of different sizes. Each box can hold all five *****.

asked Mar 31, 2019 in JEE by kratos

+2 votes

1 answer

Two circular beads of different sizes are joined together such that the distance between their cenkes is 14 cm.

asked Mar 31, 2019 in Class 12 by kratos

To see more, click for the full list of questions or popular tags.

...