25% of a number is added to 20, the result is 50% of the number. Then the number is: 

In an examination, every candidate took Chemistry or Mathematics or both. 60% took Chemistry and 65% took Mathematics. The total number of candidates was 30000. How many took both Mathematics and Chemistry?

Two taps can fill together a tank in 6 hours and 40 minutes. One can fill it independently in 15 hours, the other can fill in

Find the angle between the hour hand and the minute hand of a clock when the time is 3.25. 

In the following group of numbers, what will be the sum of odd numbers. 2, 3, 8, 7, 1, 6, 9, 5, 4, 3, 8, 7, 4, 5, 6, 3, 7, 9, 6, 5, 4, 3, 2, 8, 7, 6, 4, 5, 6, 1,3, 2, 9, 7. 

The difference between two numbers is 37. When the larger number is divided by the smaller one, the quotient is 2 and the remainder is 9. The smaller number is 

Find the least number which when divided by 16, 18, 20, 25 leaves 4 as a remainder in each case, but when divided by 7 leaves no remainder. 

Salary of an employ increases consistenly by 50% every year. If his salary today is 10,000 Rs. What will be the salary after 4 years. 

A and B started a business investing Rs.22,500 and Rs.35,000 respectively. Out of a total profit of Rs.13,800 B's share is 

Two towers are 35 m and 50 m height and 20m apart on level ground. Find the length of the rope connecting their tops. 

If the side of a square is increased by 20% the area of the square is increased by

Choose the correct number to replace the incorrect from the alternatives given to keep the series in order.

3, 7, 13, 21, 33, 43, 57, 73 

രാമുവിന്‍റെ അച്ഛന്‍ നളിനിയുടെ സഹോദരനാണ്. എങ്കില്‍ നളിനി രാമുവിന്‍റെ ആരാണ്?