3751: In an office, the distribution of work hours is as shown in the following table:
No. of Staff Members------No. of hours worked
5------------------------ 0 - 19
12------------------------ 20 - 24
25------------------------ 25 - 29
40------------------------ 30 - 34
15------------------------ 35 - 39
8------------------------ 40 - 45
Consider the following inferences drawn from the table :
I. The average number of hours worked by a staff member is about 30.
II. The percentage of those who worked 35 or more hours is less than 25.
III. At least 5 staff members worked more than 44 hours.
Which of these inferences is/are valid ?
(a) I alone
(b) II alone
(c) I and II
(d) I, II and III
3752: India's population growth during the 29th century can be classified into four distinct phases. Match List I (Period) with List II (Phase) and select the correct answer using the using the codes given below the lists:
List I List II
(Period) (Phase)
A. 1901-21 1. Steady growth
B. 1921-51 2. Rapid high growth
C. 1951-81 3. Stagnant growth
D. 1981-2001 4. High growth with definite signs of slowdown
Codes:
A B C D
(a) 3 1 4 2
(b) 1 3 2 4
(c) 3 1 2 4
(d) 1 3 4 2
3753: The national income of a country in a given period is equal to the
(a) total value of goods and services produced by the nationals
(b) sum of total consumption and investment expenditure
(c) sum of personal income of all individuals
(d) money value of final goods and services produced
3754: The heater element in an electric iron is made of:
(a) Nichrome
(b) Tungsten
(c) Copper
(d) Iron
3755: An air bubble in water will act like a
(a) convex mirror
(b) convex lens
(c) concave mirror
(d) concave lens