Quantitative Aptitude - Arithmetic Ability Questions

A boat goes 15 km upstream and 10 1/2 km down stream in 3 hrs 15 min. It goes 12 km upstream and 14 km downstream in 3 hrs. What is the speed of the boat in still water?

Rahi deposited Rs. 600 in a bank that promised 8% simple interest per annum. If Rahi kept the money with the bank for 5 years, she will earn an interest of

23 x 31 = 713. How much is 0.0713 / 3.1?

The order of rotational symmetry of a trapezium is

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.

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

What is the sum of the first 12 terms of an arithmetic progression if the first term is -19 and last term is 36?

Which is the correct ascending order of the given numbers?