If A and B have n elements in common, then the numberofelements common to A x B and B x A is
n
2n
n2
0
Inverse of a diagonal non-singular matrix is
scalar matrix
skew symmetric matrix
zero matrix
diagonal matrix
Which of the following is false ?
(N, *) is a group
(N, +) is a semi-group
(Z, +) is a group
Set of even integers is a group under usual addition
If is equal to
m2y
- m2y
2y
- 2y
A.
m2y
If a ball is thrown vertically upwards and the height 's' reached in time 't' is given by s = 22t - 11t2, then the total distance travelled by the ball is
44 units
33 units
11 units
22 units