Quantitative Aptitude - Arithmetic Ability Questions

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

When a number is increased by 28, it becomes 107% of itself. What is the number?

What is the value of tan 7π/6?

The perimeters of a square and an equilateral triangle are equal. If the diagonal of the square is 9 cm, what is the area of the equilateral triangle?

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

Daily local train ticket costs Rs 60 and Monthly Pass costs Rs 1566. If I buy the Monthly Pass and travel for 29 days in a month than I save?

When a number is increased by 18, it becomes 106% of itself. What is the number?

Visitors to a show were charged Rs. 15 each on the first day, Rs. 7.50 on the second day, Rs. 2.50 on the third day and total attendance on three days were in the ratio 2:5:13 respectively. The average charge per person for the entire three days is