Quantitative Aptitude - Arithmetic Ability Questions

The mean of the data 2, 9, 9, 3, 6, 9, 4 is

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

At what point does the line 2x - 3y = 6 cuts the Y axis?

If PA and PB are two tangents to a circle with centre O such that ∡APB = 80°. Then ∡AOP = 

A shopkeeper purchased a chair whose marked price is Rs 1400, at two successive discount of 20% and 30% respectively. If he sells the chair for Rs 1176, then what is the profit percentage?

Pipes A, B, and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hours, respectively, the third can drain the cistern, when filled, in 6 hours. If all the three pipes are opened simultaneously when the cistern is three-fifth full, how many hours will be needed to fill the cistern?

If an equilateral triangle has side 12 cm, then what is the difference (in cm) between the circumradius and inradius?

The average weight of 3 men A, B and C is 84 Kg. Another man D joins the group and the average now becomes 80 Kg. If another man E whose weight is 3 Kg more than that of D, replaces A then the average weight of B, C, D and E becomes 79 Kg. What is the weight of A?