Exams

The difference between the ages of mother and son was 21 when mother's age was 43. If father is elder by 3 years to mother, what will be the difference between the ages of son and father when father attains 50 years?

The maximum number of electrons that can be accommodated in a shell is indicated by the formula

If '+' means 'multiplication', '-' means 'division', 'x' means 'subtraction' and '/' means 'addition', then 9 + 8 / 8 - 4 x 9 =

What is the resistance (in Ω) of an electrical component if a current of 0.4 A passes through it on application of 12 V of potential difference across it?

The mean of the data 2, 9, 9, 3, 6, 9, 4 is

In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statement:
(I) Petrol prices are increasing in the economy.
(II) The price of crude oil in international market has not shown reasonable increase.

Conclusions:
(I) The inflation has hit various commodities like petrol in the country.
(II) Demand for petrol is increasing but supply has not picked up with the same rate, hence resulting into hike in prices.

In India all of the following are sources for government revenue, except?

Product of digits of a 2-digit number is 24. If we add 45 to the number, the new number obtained is a number formed by interchange of the digits. What is the number?