Quantitative Aptitude - Arithmetic Ability Questions

If a + b = 17 and a - b = 9 then the value of (4a2 + 4b2) is,

If sinθ+ cosecθ=2, then the value of sin-7∅+cosec7∅ is

What is the average of first 19 odd numbers?

Two pipes fill a tank when working individually in 25 and 40 hours, respectively while a third pipe can drain the filled tank in 16 hours. If all the three pipes are turned on at the same time when the tank is empty, how long will it take to fill the tank completely ?

If O is the centre of a circle of radius 5 cm. At a distance of 13 cm from O, a point P is taken. From this point, two tangents PQ and PR are drawn to the circle. Then , the area of quadrilateral PQOR is

The value of (1 - √2) + (√2 - √3) + (√3 - √4) + ..... + (√15 - √16) is

Find the odd word/letters/number pair from the given alternatives

Select the odd letters from the given alternatives.