Quantitative Aptitude - Arithmetic Ability Questions

If a-b=1 and a3-b3 = 61, then the value of ab will be

What is the value of 64% of 75% of 8100?

If x+1x ≠0 and x3+1x3 = 0, then the value of x+1x4 is :

What least value must be assigned to '*' so that the number 63576 * 2 is divisible by 8?

A number is greater than thrice its reciprocal by 26/3. What is the number?

5 year hence, ratio of ages of A and B will be 7 : 5 and difference between their ages will be 4 years. What are present ages (in years) of A and B
respectively?

A canteen requires 56 kgs of rice for seven days . The quantity of rice required for the months of April and May together is

After 10 innings the average score per innings of a batsman was 52. After 12 innings the average rose to 54. If the batsman had scored 16 more runs in the 12th innings than in the previous one, how many runs did he score in the 11th innings?