Quantitative Aptitude - Arithmetic Ability Questions

If 5+x+5-x5+x-5-x = 3,then what is the value of x ?

If 2cosec2A = x, then the value of x is

If x2 + (1/x2) = 1, then what is the value of x48 + x42 + x36 + x30 + x24 + x18 + x12 + x6 + 1?

The distance between the points (2, 7) and (k, -5) is 13. What is the value of k?

Select the odd number from the given alternatives.

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

In the given series of numbers how many 7's are there which are immediately followed by 9 and immediately not preceeded by 5 ?

The area of a square is 72.25 cm². Find its perimeter (in cm).