Quantitative Aptitude - Arithmetic Ability Questions

When n is divided by 4, the remainder is 3. The remainder when 2n is divided by 4 is:

If 3x2 - ax + 6 = ax2 + 2x + 2 has only one (repeated) solution, then the positive integral solution of a is

The 7th and 12th term of an arithmetic progression are -15 and 5 respectively. What is the 16th term?

Which of the following is correct?

What is the value of ( 1/3 - cosec30°) ?

Simplify (2/7 + 3/5) / (2/5 + 2/7)

ΔABC is right angled at B. BD is an altitude. DC = 9 cm and AC = 25 cm. What is the value of BC (in cm)?

The order of rotational symmetry of a parallelogram is