MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Mathematics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
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)} | |
| 2. |
A function f:R→R defined by f(x)=5x4+2 is one – one but not onto. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The function f:R→R defined as f(x)=7x+4 is both one-one and onto. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
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 | |
| 5. |
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 | |
| 6. |
The following figure represents which type of function? |
| A. | one-one |
| B. | onto |
| C. | many-one |
| D. | neither one-one nor onto |
| Answer» C. many-one | |
| 7. |
The following figure depicts which type of function? |
| A. | one-one |
| B. | onto |
| C. | many-one |
| D. | both one-one and onto |
| Answer» B. onto | |