SSC CGL Tier-2 2010 Maths

A man can row against the current three fourth of a kilometre in 15 minutes and returns the same distance in 10 minutes. The ratio of his speed to that of the current is

Two places A and B are 100 km apart on ahighway. One car starts fromAand another from B at the same time. If the cars travel in the same direction at a constant speed, they meet in 5 hours. If the cars travel towards each other, they meet in 1 hour. What is the speed of the carrunning faster ?

A can complete apiece of work in 12 days. Bis 60% more efficientthanA. The number of days, that B will take to complete the same work, is

Two pipes can fill an empty tank separately in 24 minutes and 40 minutes respectively and a third pipe can empty 30 gallons ofwater per minute. If all the three pipes are open, empty tank becomes full in one hour. The capacity of the tank (in gallons) is

A batsman,in his $$12^{th}$$ innings, makes a score of 63 runs and there by increases his average score by 2. The average of his score after $$12^{th}$$ innings is

The greatest number,that divides 43, 91 and 183 so as to leave the same remainder in each case, is

$$\frac{\sqrt{7}}{\sqrt{16+6\sqrt{7}}-\sqrt{16-6\sqrt{7}}}$$ is eual to

The sum of the areas of the 10 squares of the lengths of who sides are 20 cm, 21 cm, ........... 29 cm respectively is

The square root of $$\frac{9.5 \times 0.0085 \times 18.9}{0.0017\times 1.9 \times 2.1}$$ is

If $$2x + \frac{1}{3x} = 6$$,then $$3x + \frac{1}{2x}$$ is equal to