Quantitative Aptitude - Arithmetic Ability Questions

Which of the following is the CORRECT option for the triangles having sides in the ratio of 3:4:6?

The median of the numbers 4, 2, 2, 6, 3 and 8 is

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 22472, and Rs 23820.32 respectively, what is the rate of interest?

The simple interest on a sum is 7/8 of the principal for 5 years. What is the rate (in percentage) of interest per annum?

What is the area (in sq cm) of a regular hexagon of side 14 cm?

 What is the value of (sin60° - 2/√3) ?

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

A bank offers 15% compound interest per half year. A customer deposits Rs 7200 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by means of interest is