A square matrix A is called orthogonal if
A = A2
B.
Let x be the number of integers lying between 2999 and 8001 which have at least two digits equal. Then x is equal to
2480
2481
2482
2483
A survey was conducted among 300 students. It was found that 125 students like to play cricket, 145 students like toplay football and 90 students like to play tennis. 32 students like to play exactly two games out of the three games.
How many students like to play all the three games ?
14
21
28
35
A survey was conducted among 300 students. It was found that 125 students like to play cricket, 145 students like toplay football and 90 students like to play tennis. 32 students like to play exactly two games out of the three games. How many students like to play exactly only one game?
How many students like to play all the three games ?
196
228
254
268