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10th Maths Assignment Answers 2021
TN SCERT Full Answer Key
10th Maths Assignment Answers. 10th Standard TN SCERT Assignment Answers, 10th Maths Unit 1 TN SCERT Answer key 2021. 10th Standard All Subject TN SCERT Assignment Unit 1 Answers. TN SCERT Announced 1st to 12th All Subject Assignment Worksheets for Unit 1. Students Can Note that 10th Mathematics Unit 1 TNSCERT Assignment. 10th Tamil Assignment Answers, 10th Tamil Assignment Answers download PDF. 10th Maths Assignment Answers Unit 1 TNSCER Tamil Medium and English Medium.
10th Maths Assignment Answers
10th Standard Maths Unit 1 TN SCERT Assignment Answer key.
10th Assignment Answers TN SCERT
10th Tamil TN SCERT Unit 1 Answers
- Class:10
- Subject: MATHEMATICS
- Unit 1- Relations And Functions.
Part A
I. Multiple Choice Questions:
1. If n(A x B)- 6and
A-(1,3]thenn(B)is
a)1
b)2
c)3
d) 6
Ans: C) 3
2. A-{a,b.p). B=(2,3), C (p.q.r.s)then, n[(AUC)X B] is
a) 8
b) 20
c) 12
d) 16
Ans: C) 12
3. If there are 512 relations from a set A-(2,3,5]to a setB, then the
number of elements in B is a)
2
b) 3
c) 4
d) 5
Ans: b) 3
4. The range of the relation R={(x,X^{2}/X –is a prime number
less than 13} is
a) (2,3,5,7)
b)(2,3,5,7,11)
c) (4,9,25,49,121)
d) {1,4,9,25,49,121)
Ans: c) (4,9,25,49,121)
5. if the ordered pairs (a+2,4) and (5,2a+b) are equal then (a,b) is,
a) (2,-2)
b) (5,1)
c) (2.3)
d) (3,-2)
Ans: d) (3,-2)
6. Let n(A) = M and n(B) = n then the total number of non-empty
relations that can be defined from A to B is
a) m^{n}
b) n^{m}
c) 2^{mn}-1
d) 2^{mn}
Ans: d) 2^{mn}
7. if ((a,b), (7,b)]represents an identity function, then the value of
a and b are respectively
a) (5, 7)
b) (5,5)
c) (7,5)
d) (7, 7)
Ans: …………..
8. f(x) = 2^{x} and g(x) =1/3x then fog is
Ans: c) 2/9x^{2}
9. If f: A-Bis a bijective function and if n(B) - 7 thenn(A) is equal
to
a) 7
b) 49
c) 1
d) 14
Ans: a) 7
10. f(x) = (x+1)³(x-1)³
represents a function which is
a) Linear
b) Cubic
c) reciprocal
d) Quadratic
Ans: d) Quadratic
Part-B
II. Short Answer:
11. If A= (1,3,5), and B = {2,3,}then findA x B and B x A.
12. If B x A = {(-2,3), (-2,4), (0,3), (0,4), (3, 3), (3,4)}, find A
and B
13. Given the function f : x x² -5x + 6 evaluate f(2)
14. Define onto function.
15. Find k if f.f(k)= 5 where f (k) = 2k-1
Part - C
III.Solve the following:
16. Let A (0,1), B = {2,3,4 )and C=(3,5)verity that A x (BUC) - (AXB) U
(AXC)
17. Let A = {1, 2, 3, 4 )and B = {2,5,8, 11, 14 )be two sets, Let f: A B
be a function given by f (x) = 3x - 1 Represent this function
i) By arrow diagram
ii) in a table form
iii) as a set of ordered pairs
iv) in a graphical form
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