591: A group of workers promise to complete a piece of work in 10 days, but five of them do not report for work. If it took the remaining workers 12 days to complete the work, then the number of workers originally hired was
(a) 15
(b) 25
(c) 30
(d) 45
592: With reference to Indian transport systems, consider the following statements:
1. Indian railways system is the largest in the world.
2. National Highways cater to 45 per cent of the total road transport demand.
3. Among the states, Kerala has the highest density of surface road.
4. National Highway No. 7 is the longest in the country.
Which of these statements are correct?
(a) 1 and 2
(b) 1 and 3
(c) 2 and 3
(d) 2 and 4
593: Assertion (A):
The thickness of the atmosphere is maximum over the Equator.
Reason (R):
High insolation and strong convection currents occur over the Equator.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
594: In dividing a number by 585, a student employed the method of short division. He divided the number successively by 5, 9 and 13 and got the remainders 4, 8, 12 respectively. What would have been the remainder if he had divided the number by 585?
595: The average annual temperature of a meteorological station is 26 degree Celcius, its average annual rainfall is 63 cm and the annual range of temperature is 9 degree Celcius. The station in question is
(a) Allahabad
(b) Chennai
(c) Cherrapunji
(d) Kolkata