NCERT Class 12-Mathematics: Chapter – 1 Relations and Functions Part 13 (For CBSE, ICSE, IAS, NET, NRA 2023)
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Question 39:
Which of the following functions from Z into Z are bijections?
(A)
(B)
(C)
(D)
Answer: (B)
Question 40:
Let be the functions defined by . Then is
(A)
(B)
(C)
(D)
Answer: (B)
Question 41:
Let and be the bijective functions. Then is
(A)
(B)
(C)
(D)
Answer: (A)
Question 42:
Let be defined by . Then
(A)
(B)
(C)
(D)
Answer: (A)
Question 43:
Let be defined by . Then is
(A) Constant
(B)
(C)
(D) None of these
Answer: (C)
Question 44:
Let be the function defined by , then the range of is
(A)
(B)
(C)
(B)
Answer: (B)
Question 45:
Let be the function defined by and be another function defined by . Then is
(A)
(B)
(C)
(D) None of these
Answer: (D)
Question 46:
Let be defined by
Then is
(A)
(B)
(C)
(D) None of these
Answer: (A)
Question 47:
Let be given by . Then is
(A)
(B)
(C) Does not exist
(D) None of these
Answer: (B)
Fill in the Blanks in Each of the Exercises 48 to 52
Question 48:
Let the relation R be defined in N by if . Then ________.
Answer: