Quantitative Aptitude - Arithmetic Ability Questions

If A = 1 – 10 + 3 – 12 + 5 – 14 + 7 + ... upto 60 terms, then what is the value of A?

If x + y = 10 and x2 + y2 = 68, then find xy

A missile travels at 1260 km/h. How many metres does it travel in one second?

A and B start an enterprise together, with A as active partner. A invests Rs 4000 and Rs 2000 more after 8 months. B invests Rs 5000 and withdraws Rs 2000 after 9 months. Being the active partner, A takes Rs 100 per month as allowance, from the profit. What is the share of B if the profit for the year is Rs 6700?

Nine years later, age of B will be equal to the present age of A. Sum of A's age 3 years later and B's age 4 years ago is 76. If C is half of the present age of B, then what will be C's age (in years) after 10 years?

The area of the largest triangle that can be inscribed in a semicircle of radius 6m is

If x+y+z = 1, 1/x + 1/y + 1/z = 1 and xyz = -1, then x3+y3+z3 is equal to

A train is moving at the speed of 72 km/hr. How many seconds will it take to cover a distance of 1400 m ?