Quantitative Aptitude - Arithmetic Ability Questions

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

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

If a retailer offers a discount of 28% on the marked price of his goods and thus ends up selling at cost price, what was the % mark up?

The sum of a fraction and 4 times its reciprocal is 13/3. What is the fraction?

If α and β are the roots of equation x2 – 2x + 4 = 0, then what is the equation whose roots are α3/β2 and β3/α2?

The costs of daily ticket of local train is Rs. 50 and Monthly Pass costs is Rs. 1125. If I buy the Monthly Pass and travel for 30 days in a month then I save?

Determine the value of z in the equation: z = 20+20+20+20+...∞

A sum becomes Rs 1392 in 2 years and Rs 1488 in 3 years at simple interest. What is the rate (in percentage) of interest per annum?