Which one of the following is the next number in the series : 7, 7, 14, 42, 168-----?

12 year old Manick is three times as old as his brother Rahul. How old will Manick be when he is twice as old...

Lubana has purchased a square sheet of plywood of 289 square feet area. To cover a wall she must cut of two fe...

The average of the two-digit numbers which remain the same when the digits interchange their position is -

If 15% of 40 is greater than 25% of a number by 2, then the number is-

Chose the pair of numbers which comes next: 75,65,85,55,45,85,35.........

If the sides of a square increase by 10%,how much will the area be increased in percentage ?