246: 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
247: A rectangular piece of iron sheet measuring 50 cm by 100 cm is rolled into a cylinder of height 50 cm. If the cost of painting the cylinder is Rs. 50 per square metre, then what will be the cost of painting the outer surface of the cylinder ?
(a) Rs. 25.00
(b) Rs. 37.50
(c) Rs. 75.00
(d) Rs. 87.50
248: Black Pagoda is in:
(a) Egypt
(b) Konark
(c) Madurai
(d) None of these
249: Ram and Shyam work on a job together for four days and complete 60% of it. Ram takes leave then and Shyam works for eight more days to complete the job. How long would Ram take to complete the entire job alone?
(a) 6 days
(b) 8 days
(c) 10 days
(d) 11 days
250: Consider the geographical details given in the following figure :
The point marked by A in the figure indicates a country in
(a) North America
(b) South America
(c) Europe
(d) Asia