Quantitative Aptitude - Arithmetic Ability Questions

What will be the value of xy, if x2+y2 = 45 and x-y=5 ?

In ΔABC, ∠BAC = 90° and AD is drawn perpendicular to BC. If BD = 7 cm and CD = 28 cm, then what is the length (in cm) of AD?

Which of the following value of 'x' satisfies the equation 814x+4 = 2432x+8?

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

Select the odd letters from the given alternatives.

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

The top of a broken tree touches the ground at a distance of 15 m from its base. If the tree is broken at a height of 8 m from the ground, then the actual height of the tree is

If x = a + 1a, y = a - 1a ,(a>0), then the value of x4+y4-2x2y2 is