Quantitative Aptitude - Arithmetic Ability Questions

The average of three numbers is 6. The average of the first two is 5 while the average of the last two is 8. The three numbers are:

Daily local train ticket costs Rs 30 and Monthly Pass costs Rs 670.8. If I buy the Monthly Pass and travel for 26 days in a month than I save?

Find out the odd word/letters/number/number pair from the given alternatives.

Find the odd word/letters/number from the given alternatives.

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

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

What is the value of (4a2 + 8b + 14c + 2)/2 ?

Which of the following is not true for a rhombus?