Quantitative Aptitude - Arithmetic Ability Questions

The average of three numbers is 6. The average of the first two is 5 while the average of the last two is 8. The three numbers are:

In ∆ABC, ∡A + ∡B = 75 and ∡B + ∡C = 140, then ∡B =

Two equal circles of radius 3 cm each and distance between their centres is 10 cm. The length of one of their transverse common tangent is

In a factory, 60 workers can stitch 120 m of clothes in 7 days, what length of clothes can be stitched by 70 workers in 5 days?

A solid sphere of radius 9 cm is melted to form a sphere of radius 6 cm and a right circular cylinder of same radius. The height of the cylinder so formed is

What is the difference of the factors of the expression x2 + (1/x2) – 6?

The ratio between Ram's age and Rahim's age is 10:11. What is the age of Rahim in percentage of Ram's age

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.