Quantitative Aptitude - Arithmetic Ability Questions

Find the value of 'y' if y84 = 225

What is the simplified value of (cosec A – sin A)(sec A – cos A)(tan A + cot A)?

Area of _____ equals half the product of its diagonal.

The average age of 40 students of a class is 16 years. If the average age of 24 students is 15.5 years and that of the 15 students is 16 2⁄3 years, then the age of 40th student is

Anil can do a piece of work in 14 days which Rohit can do in 21 days. They worked together for few days after which Anil left. If Rohit worked alone for 3 days, find the total number of days it took to complete the whole work.

If 7 times the seventh term of an Arithmetic Progression (AP) is equal to 11 times its eleventh term, then the 18th term of the AP will be

The percentage change of a number when it is first decreased by 10% and then increased by 10% is

If sec -7π/4 = x, then the value of x is