Quantitative Aptitude - Arithmetic Ability Questions

Find the sum of interior angles of a dodecagon?

The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?

Select the odd word/letters/number/number pair from the given alternatives.

In a camp 180 students had ration for 20 days. How many students should leave the camp if the ration should last for 25 days?

Deepti bought a set of cups for Rs. 175, but then had to sell it later to clear old stocks for Rs. 161. What is the percentage of loss that she had to incur?

Select the odd word from the given alternatives.

A ladder 20 m long is leaning against a vertical wall. It makes an angle of 30 deg with the ground. How high on the wall does the ladder reach?

If tanθ = 815, then 1-sinθ1+sinθ is