Quantitative Aptitude - Arithmetic Ability Questions

A bank offers 15% compound interest per half year. A customer deposits Rs 2400 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is

If x2+ x = 19, then what is the value of (x + 5)2+ [1/(x + 5)2]?

The mean of 20 observations is 19. One more observation is included and the new mean becomes 20. The 21st observation is

Find the odd word/letters/number from the given alternatives.

In the given figure, ABC is an equilateral triangle. Two circles of radius 4 cm and 12 cm are inscribed in the triangle. What is the side (in cm) of an equilateral triangle ?

Which of the following numbers will have an irrational square root?

A person clapped his hands near a cliff and heard echo after 6 s. The distance of the cliff from the personis: [take v = 346 m/s]

The ratio of incomes of P and Q is 5 : 3. Ratio of income of Q and R is 5 : 2. If one-fourth of P’s income is Rs 500 more than the R’s income, then what is the income (in Rs) of Q?