Quantitative Aptitude - Arithmetic Ability Questions

If cot2A = x, then x is

Between 50 and 150 how many numbers are divisible by 7?

What should be the missing digit so that the number 347_547 becomes exactly divisible by 11?

A and B are 15 kms apart and when travelling towards each other meet after half an hour whereas they meet two and a half hours later if they travel in the same direction. The faster of the two travels at the speed of

If x + 1/x = 6, then value of x2 + 1/x2 is

In the given figure, O is the centre of the circle and QOR = 50 deg, then what is the value of RPQ (in deg) ?

Points P and Q lie on side AB and AC of triangle ABC respectively such that segment PQ is parallel to side BC. If the ratio of AP:PB is 2:3, and area of Δ APQ is 8 sq cm, what is the area of trapezium PQCB?

Ram Naresh got two successive discounts, a bag with a list price of Rs.400 is available at Rs. 160. If the second discount is 20%, find the first discount.