Quantitative Aptitude - Arithmetic Ability Questions

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

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

If a number is reduced by 35%, then it becomes 416. By how much percent should the number be increased so that it become 876.8?

What are the co-ordinates of the centroid of a triangle, whose vertices are A(1, -5), B(-4, 0) and C(3, -4)?

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

ΔABC is right angled at B. BD is its altitude. AD = 4 cm and DC = 12 cm. What is the value of AB (in cm)?

In triangle ABC, O is the orthocenter and angle BOC is 120 deg. Calculate angle BAC.

Saathi deposited Rs. 825 in a bank that promised 8% simple interest per annum. If Saathi kept the money with the bank for 5 years, she will earn an interest of