Quantitative Aptitude - Arithmetic Ability Questions

What is the sum of first 40 terms of 1 + 3 + 4 + 5 + 7 + 7 + 10 + 9 + ....?

If the edge of a cube is increased by 10%, then what will be the percentage increase in its volume ?

If Sin 31° = xy, then the value of Sec 31° - Sin 59° is

If a3- b3= 91 and a - b = 1, then what is the value of ab?

60% of P = 50% of Q and Q = x% of P. What is the value of x?

If A% of A is 196, then what is the value of A?

The average weight of P, Q and R is 45 kg. If the average weight of P and Q be 36.5 kg and that of Q and R be 52 kg, then what is the weight (in kgs) of Q?

Two cyclists A and B start cycling at 21 km/hr and 24 km/hr towards each other. They meet after 1 hour and 12 minutes. How far (in km) were they from each other when they started?