Quantitative Aptitude - Arithmetic Ability Questions

Which one of the following is an irrational number?

Solve the following equation to find x: (x − 2)2 − 36 = 0 : xεN

If SinX-CosX=1, where 'X' is an acute angle, the value of SinX+CosX is

A sum of Rs 10000 becomes Rs 14641 when invested at compound interest at the yearly interest rate of 20% per annum. If the compounding is done half yearly, then for how many years was the sum invested?

In the following question, select the odd letters from the given alternatives.

Average of 14 numbers is 32. If the average of last 5 numbers is 26, then what is the average of the remaining numbers?

Mahesh buys a watch of Rs 300 and sells it. Mahesh gives two successive discount of 15% and 6% to the buyer. What will be the selling price (in Rs) ofthe watch?

Some carpenters promised to do a job in 15 days but 3 of them were absent and remaining did the job in 20 days. What was the original number of carpenters?