Quantitative Aptitude - Arithmetic Ability Questions

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

P + Q = 2(P-Q). If Q = 10, what is the value of P?

In a triangle, the length of the side opposite the angle which measures 45° is 16 cm, what is the length of the side opposite to the angle which measures 90°? 

ΔPQR is right angled at Q. If cosP = 3/5, then what is the value of cosR ?

Manish lent out Rs 20000 in two parts. He put out first part at 6% and the second part at 8% interest. The yearly average interest comes out to be 6.4%.What are the amounts (in Rs) that were lent at 6% and 8% respectively?

After buying a toy for Rs.45, Raghu managed to sell it at a profit of 15%. The selling price of the toy was

The point of the intersection of three medians is known as the ____________.