EXERCISE 4 (OBJECTIVE TYPE QUESTIONS in 121 130)

121.       Find the sum:  ½ + 1/6 + 1/12 + 1/20 + 1/30 + 1/42 +1/56 + 1/72 + 1/90 + 1/110 + 1/132.

a)   7/8

b)      11/12

c)       15/16

d)      17/18

122.       The sum of the first 35 terms of the series 1/2 +1/3 -1/4-1/2 – 1/3 +1/4 _ ½ _ 1/3 – 1/4…………….is  

a)      -1/2

b)      -1/4

c)       1/4

d)      None of these

123.       The value of 999 995/999 x 999 is:

a)      990808

b)      998996

c)       998999

d)      999824

124.       (999 1/7 + 999 2/7 + 999 3/7 + 999 4/7+ 999 6/7 ) is simplified to:

a)      2997

b)      5979

c)       5994

d)      5997

125.       The value of 1  + 1/ 4 x 3²  + 1/ 4 x 3²  + 1/ 4 x 3²   is:

a)      121/108

b)      3/2

c)       31/2

d)      None of these

126.       1/1.2.3 + 1/2.3.4 + 1/3.4.5 + 1/4.5.6 is equal to:

a)      7/30

b)      11/30

c)       13/30

d)      17/30

127.       The value of 3/1².2² + 5/2².3² + 7/3².4² + 11/5.².6² + 13/6².7² + 15/7².8² + 19/9².10² is:

a)      1/100

b)      99/100

c)       1

d)      101/100

128.       How many pieces of 85 cm length can be cut from a rod 42.5 meters long?

a)      30

b)      40

c)       60

d)      None of these

129.       Income of a company doubles after every one year. If the initial income was Rs. 4 lakhs, what would be the income after 5 years. ?

a)      Rs. 1.24 crores

b)      Rs. 1.28 crores

c)       Rs. 2.56 crores

d)      None of these

130.   On sports day, if 30 children were made to stand in a column, then 16 columns could be formed. If 24 children were made to stand in a column, then  how many columns could be formed?

a)      20

b)      22

c)       29

d)      45

ANSWERS

121. B

122. B

123. B

124. D

125. A

126. A

127. B

128.  D

129. B

130. A