Quantitative Aptitude - Arithmetic Ability Questions

 In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by aLogic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives

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

Δ PQR is right angled at Q. If m√R = 30°, then what is the value of Cot P?

If sinA + sin2A = 1 then what is the value of cos2A + cos4A ?

A bag has Rs 20 in the form of 1­-rupee, 50­-paise and 10­-paise coins in the ratio of 2:3:5. Find the number of 50­-paise coins.

If R = 97 and S = 155.2, then S is how much percentage more than R?

The least number that must be added to 8961 to make it exactly divisible by 84 is

The difference between cost price and selling price is Rs 494. If loss percentage is 19%, then what is the selling price (in Rs)?