Quantitative Aptitude - Arithmetic Ability Questions

What is the value of z2+1z2 when z = 5+26 ?

A student, by mistake, wrote 64 in place of 46 as a number at the time of finding the average of 10 given numbers & got the average as 50. The correct average of the numbers is

A sum of money (P) doubles in 10 years. How much would it be in 20 years at the same rate of simple interest?

A and B can do a piece of work in 72 days. B and C can do it in 120 days and A and C can do it in 90 days. A alone can do it in:

Rakshanth is twice as good as tradesman as Verma and together they finish a piece of work in 19 days. In how many dayswill Verma alone finish the work?

Convert decimal number 101 to binary.

If 2+x+2-x2+x-2-x=2,then the value of X is

What will be the average of all the prime numbers before 19?