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Recent questions tagged combinatory

3 votes
1 answer
1
number of squares
The number of squares that can be formed from 8x8 chess board
The number of squares that can be formed from 8x8 chess board
3 votes
2 answers
2
number of rectangles
The number of rectangles that can be formed on a 8x8 chessboard
The number of rectangles that can be formed on a 8x8 chessboard
3 votes
2 answers
3
Number of ways of inviting atleast one people
Find the number of ways of inviting atleast one among 6 people to a party?
Find the number of ways of inviting atleast one among 6 people to a party?
3 votes
1 answer
4
Number System
$N$ is a $4$ digit number If the left most digit is removed the resulting number is $ \frac{1}{9}{th} \ of \ N$ How many such numbers are possible?
$N$ is a $4$ digit number If the left most digit is removed the resulting number is $ \frac{1}{9}{th} \ of \ N$ How many such numbers are possible?
1 votes
1 answer
5
Out of 100 students, 10 students used to drink milk(M), coffee(C) and Tea(T); 20M and C; 30C and T; 25M and T; 12M only; 5C only and 8T only. The number of students who did not drink any of this is
Out of 100 students, 10 students used to drink milk(M), coffee(C) and Tea(T); 20M and C; 30C and T; 25M and T; 12M only; 5C only and 8T only. The number of students who d...
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