Choose the correct answer from those given:-
1) If n (x2) = 9 , then n (X) = ………….
a) 3 b) 6 c) 18 d) 81
2) The point (-3 , 4) lies in …………. Quadrant.
a) first b) second c) third d) fourth
3) X = {5 , 6 , 7} then n (X2) = ……………
a) 3 b) 6 c) 9 d) 12
4) of X x Y {(1 , 3) , (1 , 4)} then n (X) = ………….
a) 3 b) 1 c) 4 d) 2
5) If X = {5} Y = {3} then n (X x Y)
a) 15 b) 8 c) 2 d) 1
6) If X = {3 , 5 , 7} and R is a relation on X then the relation which represents a function is ………….
a) R = {(3 , 5) , (5 , 3) , (3 , 7)} b) R = {(3 , 5) , (5 , 7)}
c) R = {(3 , 5) , (5 , 5) , (7 , 5)} d) R = {(3 , 3) , (3 , 5) , ( 3 , 7)}
7) If the point (x, 7) lies on Y = axis then 5x + 1 = …………
a) zero b) 1 c) 5 d) 6
8) If R is a function from set X to set Y where
X = {2 , 5 , 8} , Y = { 3, 5} and R = {(2 , 3) , (5 , 3) , (x , 3)} then x =.........
a) 2 b) 3 c) 5 d) -8
9) If R is a function where R = {(4, 3) (5 , 6) , (9 , 3)} then the range of the function R is ………
a) {3 , 4 , 5 , 6 , 9} b) {4 , 5 , 9}
c) {3 , 6 , 9} d) {3 , 9}
10) If f (x) = 7x - 1 2 then f (1 2) = …………….
a) 7 b) 1 2
c) 7 d) 3
11) If f (x) = 4x + b f (3) = 15 then b = ………
a)156 b) 3 c) 4 d) -3
12) If (m , 13) satisfies the function f where f (x) = 3x + 4 then m = ….
a) 6 b) -6 c) 3 d) -3
13) If (2 , b ) satisfies the function f where f(x) = 3x – 6 , then b = ……..
a) Zero b) 7 c) 9 d) 2
14) If f (x) = x2 + 7 then f (3) = ……….
a) 10 b) 7 c) 9 d) 16
15) If f (x) = x3 then f (2) + f (-2) = ………
a) 16 b) Zero c) -7 d) 4
16) if (2 , -6) satisfies the function f where f(x) = k x + 8 then k = …
a) -16 b) 7 c) -7 d) 2
17) The function f, where f (x) = 5 x is represented graphically by a straight line passes through the point…..
a) (5 , 5) b) (0 , 0) c) (0 , 5) d) (5, 0
18) If f (x) = 5x + 4 is represented graphically by a straight line passes through the point (3 , b) then b =……
a) 5 b) 4 c) 3 d) 19
19) If the function f is a function from set X to set Y then the domain of the function is ………..
a) X b) Y c) X x Y d) Y x X
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