EXERCISE 4 (OBJECTIVE TYPE QUESTIONS in 111 120)

111.       If 3X –y = 5 and X/X + y = 5/7, then what is the value of x-y ?

a)      3

b)      4

c)       6

d)      9

e)      None of these

112.       If 4X + 3y = 18 X y and 2X – 5Y + 4Xy =0, then the values of X and Y will be respectively

a)      – 1/2 and -1/3

b)      -1 and -3

c)       1/2 and 1/3

d)      1/4and 1/3

113.       If 2X + Y =17; y+ 2x – z + 3y =19; X+ 2y + 2z = 24, then what is the value of z?

a)      41

b)      43

c)       45

d)      55

e)      None of these

114.       If 3X = 4y +z – 7; 2X –z + 3y=19; X+ 2y + 2z =24, then what is the value of z?

a)      4

b)      5

c)       6

d)      8

115.       If 2X +Y=15, 2y + z + =25 and 2z + X =26, what is the value of z?

a)      4

b)      7

c)       9

d)      11

116.       If 2X + 3y = 31, Y-x = 4 and X + 2z =11, then what is the value of X + y + z?

a)      12

b)      13

c)       15

d)      16

117.       3/4 (1+1/3) (1 + 2/3) (1 -2/5) (1 + 6/7) (1-12/13) =?

a)      1/5

b)      1/6

c)       1/7

d)      None of these

118.       When simplified, the product (1 – ½ ) (1-1/3) (1-1/4)…..(1-1/n) gives

a)      1/n

b)      1/6

c)       2(n-1)/n

d)      2/n(n+1)

119.       The value of (1 +1/2) (1+1/3) (1+ 1/4)….(1+1/120) is:

a)      30

b)      40.5

c)       60.5

d)      121

120.   When simplified, the product (2 -1/3) (2 – 3/5) (2 – 5/7)….(2 – 999/1001) is equal to:

a)      991/1001

b)      1001/13

c)       1003/13

d)      None of these

ANSWERS

111. A

112. C

113. E

114. B

115. D

116. C

117. C

118. A

119. C

120. D