Quantitative Aptitude - Arithmetic Ability Questions

If x2+1x2-6, then find the value of 2x(x-1)x3-x2-x+1

What is the mean of the first five Triangular Numbers?

The average weight of 30 students in a class is 25 kgs. If the weight of the class teacher is added, the average weight increase by 2 kgs. The weight of the class teacher in kgs is

The mean of a distribution is 20 and the standard deviation is 4. What is the value of the coefficient variation?

Find the odd word/letters/number from the given alternatives.

Identify the odd one out from the following:

If Tan θ = 7/24, then what is the value of Cosec θ?

If x + y + z = 0, then what is the value of (3y2 + x2 + z2 )/(2y2 – xz)?