Which of the sets of ordered pairs are onto functions from A → B ?
| A. | II and III |
| B. | III and IV |
| C. | I and V |
| D. | IV and V |
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Option: C Explanation : Click on Discuss to view users comments. |
The power set of the set S = [3, {1, 4}, 5] is
| A. | {S, 3, 1, 4, {1, 3, 5}, {1, 4, 5} {3, 4}, Φ} |
| B. | {S, 3, {1, 4,}, 5} |
| C. | {S, {3}, {3, {1, 4}}, {3, 5}, Φ} |
| D. | None of these |
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Option: D Explanation : Click on Discuss to view users comments. |
How many students known French and one but not both out of English and German?
| A. | 135 |
| B. | 30 |
| C. | 10 |
| D. | 40 |
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Option: B Explanation : Click on Discuss to view users comments. |
The number of distinct relexive and symmetric relations that can be deined on a 3 element set is
| A. | 3 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
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Option: D Explanation : Click on Discuss to view users comments. |
If I is set of positive integers and relation R is defined over the set I by xRy if xy' = yx, then R is
| A. | relexive but neither symmetric nor transitive |
| B. | relexive and transitive but not symmetric |
| C. | relexive and symmetric but not transitive |
| D. | relexive, symmetric and transitive |
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Option: D Explanation : Click on Discuss to view users comments. |
