Which number will complete the series 1,3,7,15,31,63------?

If in a certain language PRIVATE is 1234567 and RISK is coded as 2398, how is TRIVETS coded in the language?

If 42.42=k(14+m/50), where K and m are positive integers and m

If (2x-1)2=100, then which one of the following could equal x?

A rectangular field is 3. 2 yards long. A fence marking the boundary is 11.2 yards in length. What is the area...

The seventh number in a sequence of numbers is 31 and each number after the first number in the sequence is 4...

One day, Mr. Karim started 30 minutes late from home and reached his office 50 minutes late, while driving 25%...