Quantitative Aptitude - Arithmetic Ability Questions

What are the co-ordinates of the centroid of a triangle, whose vertices are A(1, -5), B(-4, 0) and C(3, -4)?

∆XYZ is right angled at Y. If tanX = 15/8, then what is the value of sinZ ?

The first and last terms of an arithmetic progression are 25 and ­52. What is the sum of the series if it has 12 terms?

Select the odd word from the given alternatives.

Consider the following statements in respect of two integers p and q (both > 1) which are relatively prime:

1) Both p and q may be prime numbers.

2) Both p and q may be composite numbers

3) one of p and q may be prime and the other composite.

Which of the above statements are correct?

If a+1b=1 and b+1c=1 , then the value of c+1a is

Coefficient of x in (x + 9)(8 - 5x) is

The average of 5 consecutive numbers is 50%, then difference between 'product of largest and smallest number' with 'product of fourth and second number' is