Quantitative Aptitude - Arithmetic Ability Questions

If P=9, Q=17 then the value of p2-q2-13

If x - 1/x = 1 then what is the value of 1x1x-1-1x+1+1x2+1-1x2-1?

1/(secA + tanA) is equal to

In what time will a train, 60 metres long, running at the rate of 36 km/hr pass a telegraph post?

A train, starting from rest, attains a velocity of 90 kmph in 5 minutes. Assuming that the acceration is uniform, the distance travelled by the train during this time is

A trader sells wire and gains 60% on the cost price. What will be the profit % on selling price?

A vendor buys bananas at 7 for Rs 6 and sells at 6 for Rs 7. What will be the result?

If 5x + 1/x = 10, then x2 + 125x2 is equal to