MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Mathematics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Let M={5,6,7,8} and N={3,4,9,10}. Which one of the following functions is neither one-one nor onto? |
| A. | f={(5,3),(5,4),(6,4),(8,9)} |
| B. | f={(5,3),(6,4),(7,9),(8,10)} |
| C. | f={(5,4),(5,9),(6,3),(7,10),(8,10)} |
| D. | f={(6,4),(7,3),(7,9),(8,10)} |
| Answer» B. f={(5,3),(6,4),(7,9),(8,10)} | |
| 2. |
Let P={10,20,30} and Q={5,10,15,20}. Which one of the following functions is one one and not onto? |
| A. | f={(10,5),(10,10),(10,15),(10,20)} |
| B. | f={(10,5),(20,10),(30,15)} |
| C. | f={(20,5),(20,10),(30,10)} |
| D. | f={(10,5),(10,10),(20,15),(30,20)} |
| Answer» C. f={(20,5),(20,10),(30,10)} | |
| 3. |
Let A={1,2,3} and B={4,5,6}. Which one of the following functions is bijective? |
| A. | f={(2,4),(2,5),(2,6)} |
| B. | f={(1,5),(2,4),(3,4)} |
| C. | f={(1,4),(1,5),(1,6)} |
| D. | f={(1,4),(2,5),(3,6)} |
| Answer» E. | |
| 4. |
A function f:R R defined by f(x)=5x4+2 is one one but not onto. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
The function f:R R defined as f(x)=7x+4 is both one-one and onto. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
A function f:R R is defined by f(x)=5x3-8. The type of function is _________________ |
| A. | one -one |
| B. | onto |
| C. | many-one |
| D. | both one-one and onto |
| Answer» D. both one-one and onto | |
| 7. |
A function f N N is defined by f(x)=x2+12. What is the type of function here? |
| A. | bijective |
| B. | surjective |
| C. | injective |
| D. | neither surjective nor injective |
| Answer» D. neither surjective nor injective | |