Quantitative Aptitude - Arithmetic Ability Questions

Choose the one which is different or odd from the following options?

The 3rd and 6th term of an arithmetic progression are 13 and -5 respectively. What is the 11th term?

If (1 + cosA)/(1 - cosA) = x, then x is

The lengths of diagonals of a rhombus are 24cm and 10cm the perimeter of the rhombus (in cm ) is :

What will be the value of a3+b3, if a2+b2=32 and a+b=8 ?

Mr. Akbar sold a bus for Rs.20,400 with a loss of 15%. At what price should the price should the bus be sold to get a profit of 15%?

At 8% simple interest per annum a sum of money becomes Rs. 300 in 2.5 years. What was the sum invested?

Saathi deposited Rs. 825 in a bank that promised 8% simple interest per annum. If Saathi kept the money with the bank for 5 years, she will earn an interest of