Quantitative Aptitude - Arithmetic Ability Questions

If the value of √42 is approximately 6.480, then what is the approximate value of √(6/7)?

The mean of marks secured by 60 students in division A of class X is 66, 45 students of division B is 62 and that of 75 students of division C is 60. Find the mean of marks of the students of three divisions of Class X.

Deepti bought a set of cups for Rs. 175, but then had to sell it later to clear old stocks for Rs. 161. What is the percentage of loss that she had to incur?

What is the distance between the points (11,-5) and (-1,0)?

Which of the following numbers is a perfect square?

In the following question, select the odd letter pair from the given alternatives.

Select the odd number from the given alternatives.

If ( x - 5)2 + (y - 2)2 + (z - 9)2 = 0, then value of (x + y - z) is