Quantitative Aptitude - Arithmetic Ability Questions

In a camp 180 students had ration for 20 days. How many students should leave the camp if the ration should last for 25 days?

Two students appeared for an examination. One of them secured 26 marks more than the other and his marks were 75% of the sum of their marks. The marks obtained by them are

If x = 93 , y = 93 , z = 94 then the value of x2 - y2 + 10xz + 10yz is

If sec2θ+tan2θ=3, then sec4θ-tan4θ =

If x2 – 4x + 1 = 0, then what is the value of x9 + x7 – 194x5 – 194x3?

Two students appeared for an examination. One of them secured 13 marks more than the other and his marks were 76% of the sum of their marks. The marks obtained by them are

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

For triangle PQR, find equation of altitude PS if co­-ordinates of P, Q and R are (6,2), (0,3) and (­-4,5) respectively?