Exams

In a market system, the central problems regarding how much and what to produce are solved through the coordination of economic activities brought about by ________ signals.

A man walks 5 kilometre towards South and then turns to the right. After walking 3 kilometre, he turns to the left and walks 5 kilometre. Now in which direction is he from the starting point?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

Hydrogen, Helium, Lithium, ?

A dinner set is quoted for Rs 1500. A customer pays Rs 1173 for it. If the customer got a series of two discounts and the rate of first discount is 15% then the rate of second discount was,

In 3 years Rs 3000 amounts to Rs 3993 at x% compound interest, compounded annually. The value of x is

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
ENCYCLOPEDIA

What is the value of (cos30° + 1/2) ?

The variance of a set of data is 121. Then the standard deviation of the data is