Quantitative Aptitude - Arithmetic Ability Questions

In triangle ABC, AB = 8 cm, angle A is bisected internally to intersect BC at D. BD = 6 cm and DC = 7.5 cm. What is the length of CA?

Which one is the largest among the fractions (5/113), (7/120), (13/145) and (17/160)?

Find the maximum area of a rectangular field which is surrounded by a rope of 100 meters?

If x + 1/x = 6, then value of x2 + 1/x2 is

What is the value of tan 1° tan 2° tan 3°....... tan 89°?

The bus fare between two cities is increased in the ratio 25:29. Find the increase in the fare, if the original fare is Rs. 625

When a number is increased by 18, it becomes 106% of itself. What is the number?

The marked price of a book is Rs 4200. The shopkeeper gives two successive discounts of 25% and y% to the customer. If the customer pays Rs 2898 for the book, then what is the value (in percentage) of y?