Quantitative Aptitude - Arithmetic Ability Questions

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

[sinA/(1 + cosA)] + [(1 + cosA)/sinA] is equal to

What is the area of the sector whose central angle is 90° and radius of the circle is 14 cm?

If p = 99, then the value of p(p2+3p+3) will be

If P = 22 + 62 + 102 + 142 + ... 942 and Q = 12 + 52 + 92 + ... 812, then what is the value of P – Q?

Which of the following quadratic equations has real roots?

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?

Find the value of 62532+18