416: Solve the given equations :
x2 + y2 = 34
x4 - y4 = 544
The values of x and y are
(a) ± 4, ± 3
(b) ± 5, ± 3
(c) ±3, ±5
(d) ±3, ±4
417: From the balance sheet of a company, it is possible to
(a) judge the extent of profitability of the company
(b) assess the profitability and size of the company
(c) determine the size and composition of the assets and liabilities of the company
(d) determine the market share, debts and assets of the company
418: There is a concern over the increase in harmful algal blooms in the seawaters of India. What could be the causative factors for this phenomenon?
1. Discharge of nutrients from the estuaries.
2. Run-off from the land during the monsoon.
3. Upwelling in the seas.
Select the Correct answer from the codes given below:
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
419: A person purchases 100 pens at a discount of 10%. The net amount of money spent by the person to purchase the pens is Rs. 600. The selling expenses incurred by the person are 15% on the net cost price. What should be the selling price for 100 pens in order to earn a profit of 25%?
(a) 862.50
(b) 802.50
(c) 811.25
(d) 875
420: Which one of the following amendments to the Indian Constitution empowers the President to send back any matter for reconsideration by the Council of Ministers?
(a) 39th
(b) 40th
(c) 42nd
(d) 44th