The number of elements in the power set of the set {{a, b}, c} is
A. | 8 |
B. | 4 |
C. | 3 |
D. | 7 |
Option: B Explanation : |
If R = ((1, 1), (3, 1), (2, 3), (4, 2)), then which of the following represents R2, where R2 is R composite R?
A. | ((1, 1), (3, 1), (2, 3), (4, 2)) |
B. | f(1, 1), (9, 1), (4, 9), (16, 4)) |
C. | 1(1, 3), (3, 3), (3, 4), (3, 2)) |
D. | ((1, 1), (2, 1), (4, 3), (3, 1)) |
Option: D Explanation : |
In a room containing 28 people, there are 18 people who speak English, 15 people who speak Hindi and 22 people who speak Kannada, 9 persons speak both English and Hindi, 11 persons speak both Hindi and Kannada where as 13 persosn speak both Kannada and English. How many people speak all the three languages ?
A. | 6 |
B. | 7 |
C. | 8 |
D. | 9 |
Option: A Explanation : |