Quantitative Aptitude - Arithmetic Ability Questions

If a+b=5 then the value of a-37+b-27 is

If x – y – √18 = –1 and x + y – 3√2 = 1, then what is the value of 12xy(x2 – y2)?

The sum of all prime numbers between 18 and 32 is:

The sum of thrice a number and twice its reciprocal is 97/4. What is the number?

When Gopal walks from A to B and returns from B to A on cycle, then it takes him 46 minutes. By walking both ways, it takes him 75 minutes. If he rides cycle both ways then what will be the total time (in minutes)?

A train runs at 80 kmph for the first 40 km and the next 30 km at 60 kmph. Find the average speed.

Find the smallest 8 digit number which is exactly divisible by 121.

For the data given below. find the sum of mode. median and mean.6, 3, 8, 4, 3, 11, 7, 4, 5, 4.