If a^2x+2=1, where a is a positive real number other than 1, then x is equal to 

If there is an increase of 25% in edible oils, by what percent should a housewife reduce her consumption of oil so that the expenditure on this item does not increase?

The value $${7+3\sqrt {5}\over3+\sqrt { 5}}-{7-3\sqrt {5}\over3-\sqrt { 5}}$$ lies between

If Arun purchases 11 articles for Rs.10 and sold all the articles at the rate of 10 for Rs.11, the profit percentage will be.

The lengths of the three sides of a right-angled triangle are (x - 1) cm, (x +1) cm and (x + 3) cm, respectively. The hypotenuse of the right-angled triangle (in cm) is:

The speed of two trains are in the ratio 6 : 7. If the second train covers 364 km in 4 hours, then what is the speed of the first train?

A dozen pair of socks quoted at ₹ 80 are available at a discount of 10%. How many pairs of socks can be bought for ₹24?

 If $$ {x\over y}={y\over w}$$ then what is the value of (xy+zw).