Quantitative Aptitude - Arithmetic Ability Questions

If secA/√(sec2A ­- 1) = x, then value of x is

Findout the odd word/letters/number/number pair from the given alternatives.

Which single discount will be equal to two successive discounts of 12% and 5%?

Find co-ordinates of the mid point of the segment joining points C (3,-5) and D (-7,3).

The difference between the place values of 9 and 5 in the number 428693745 is

There were 24 studentsina class. One of them, who was 18 years old, left the class and his place was filled up by a new comer.Ifthe average of the class was thereby lowered by 1 month, the age of new comer is-

If tanθ + cotθ = 5, then the value of tan2θ + cot2θ is

The surface area of a sphere is 1386 cm2.  Find its diameter (in cm)