Quantitative Aptitude - Arithmetic Ability Questions

Which of the following words does NOT belong with the others?

When Vijay sells 12 pens, he gains the selling price of 2 pens. Calculate his % profit?

A cylindrical vessel of radius 8 cm is partially filled with water. By how much will the water level rise if a sphere of radius 7 cm is completely immersed in this water?

P and Q undertook to do a work for Rs 7200. P alone could do it in 20 days and Q alone in 12 days. With the assistance of R they finished the work in 5days. What is the share (in Rs) of R?

The amount of Rs. 10,000 after 2 years, compounded annually with the rate of interest being 10% per annum during the first year and 12% per annum during the second year, would be (in rupees)

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

Select the odd letters from the given alternatives.

Determine the value of a/b + b/a when a + b = 8 and ab = 4.