Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd word from the given alternatives.

The perimeter of a triangle is 28 cm. If the length is 5/2 times its breadth, find the length and breadth of the triangle.

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

On Selling a book at 9/14 of the marked price there is loss of 10%. What will be the ratio of marked price and cost price of the book?

Pipes A, B, and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hours, respectively, the third can drain the cistern, when filled, in 6 hours. If all the three pipes are opened simultaneously when the cistern is three-fifth full, how many hours will be needed to fill the cistern?

Pihu and Aayu are running on a circular track of diameter 28m. Speed of Pihu is 48 m/s and that of Aayu is 40 m/s. They start from the same point at the same time in the same direction. When will they meet again for the first time?

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

Sum of a fraction and thrice of its reciprocal is 73/20. What is the fraction?