Quantitative Aptitude - Arithmetic Ability Questions

In a triangle, the distance of the centroid from the three vertices is 4cm, 6cm and 8cm respectively. Then the length of the smallest median is:

If two successive discounts of 30% and 10% are given, then what will be the ratio of marked price to selling price?

A certain sum of money becomes 4 times of itself in 30 years at a rate of simple interest. In how many years it will become double of itself at the same rate of simple interest?

If sec2θ + tan2θ = 5/3, then what is the value of tan2θ?

A shopkeeper by selling 21 Nike shoes, earns a profit equal to the selling price of 5 Nike shoes. His profit percentage is

If a2b+c=b2c+a=c2a+b=1 then the value of 21+a+21+b+21+c

The least number that must be subtracted from 1294 so that the remainder when divided by 9, 11, 13 will leave in each case the same remainder 6 is:

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