Quantitative Aptitude - Arithmetic Ability Questions

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.

-7.5, 15, -30, 60, ? , 240

O is the circumcentre of ΔABC. If AO = 8 cm, then the length of BO is

For an amount, simple interest at the rate of interest of 12% per annum for 6 years is Rs 25920. What will be the compound interest (in Rs) on same amount at the rate of interest of 8% per annum compounding annually for 2 years?

Ram lent Rs. 6,000/- to Shiva for 3 years and Rs. 8,000/- to Krishna for 5 years at the same rate of simple interest per annum. He got a total interest of Rs. 5,220 from both. Find the rate of interest per annum.

Ramesh sold a phone at a loss of 5%. Had he sold it for Rs. 200 more, he would gave gained 15%. To gain 25%, he should sell it for

If  P2+1P2 = 47, then the value of P + 1P is

In an ornament the ratio of gold and copper is 3:2. The percentage of gold in the ornament is:

What is the value of x3-1x3+8 when 8x-8x-16=0 ?