Quantitative Aptitude - Arithmetic Ability Questions

The mid points of AB and AC of the Δ ABC are P and Q respectively. If PQ = 6 cm, then the side BC is

What is the value of √121 + √12321 + √1234321 + √123454321?

The value of cos220° + cos270°is

A product was sold foe Rs. 4,500 at a profit of 12.5%. What was the amount of profit?

If cosAcotA/(1 -­ sinA) = x, then the value of x is

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 24200, and Rs 26620 respectively, what is the rate of interest?

If 2x- 3(4-2x) < 4x - 5 < 4x + 2x/3, then x can take which of the following values?

Which of the following quadratic equations has real roots?