Coffee
drinkers
Non-
coffee
drinkers
40
%
20
%
5%
35%
25
%
30
%
15%
30%
If the total population of the Towns A
and B are 10000 and 20000
respectively, then what is the total
number of female coffee drinkers in
both towns?
(a) 8000 (b) 6000 (c) 3500 (d) 2500
- The median of three positive
integers, no two of which are equal, is - What is the least possible value of
the arithmetic means of these integers?
(a) 2 (b) 3 (c) 4 (d) No such least
possible value exists - What is the geometric means of the
observations 125, 729, 1331?
(a) 495 (b) 1485 (c) 2221 (d) None of
these - Consider the following pairs of
numbers
I. (8, 12)
II. (9, 11)
III. (6, 24)
Which pairs of number have the same
harmonic means?
(a) I and II
(b) II and III
(c) I and III
(d) I, II and III - The arithmetic mean of a set of 10
numbers is 20. If each number is first
multiplied by 2 and then increased by
5, then what is the mean of new
numbers?
(a) 20 (b) 25 (c) 40 (d) 45- The mean of 25 observations is 36.
The mean of first 13 observations is 32
and that of last 13 observations is 39.
What is the value of 13th observation?
(a) 20 (b) 23 (c) 32 (d) 40
48.X 0 1 2 3 4
Frequency 4 f 9 g 4
The table above gives the frequency
distribution of a discrete variable X
with two missing frequencies. If the
total frequency is 25 and the arithmetic
mean of X is 2, then what is the value of
the missing frequency f?
(a) 4 (b) 5 (c) 6 (d) 7- An average Indian family allocates
its monthly income under different
heads as follows.
Items Percentage
Share
Food 40
House Rent 15
Saving x
Transport 12
Miscellaneous 23
A pie diagram of this data is to be
drawn. What is the value of x, if the
angle which the sector representing
saving makes at the centre is 36?
(a) 13 (b) 11 (c) 10 (d) 8- When rectangles are drawn with
the areas proportional to the
frequencies of the respective class