Quantitative Aptitude - Arithmetic Ability Questions

Find the value of 'y' if y84 = 225

The value of -261+(-380)-(-521)+821-(-121)

The compound interest earned in two years at 12% per annum is Rs 10176. What is the sum (in Rs) invested?

The value of tan80° tan10° + sin270° + sin20∘

α and β are the roots of the quadratic equation x2 – x – 1 = 0. What is the value of α8 + β8?

Find the smallest 8 digit number which is exactly divisible by 121.

The ratio of present ages of Ranjini and Shahid is 5:4. After 13 years the ratio of their ages will be 6:5. What is Ranjini's present age?

Both A and B together can complete a work in 20 days and B alone can complete the same work in 36 days. In how many days will A alone complete the work?