Quantitative Aptitude - Arithmetic Ability Questions

In the following question, four number pairs are given. The number on left side of (–) is related to the number of 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.

In ΔPQR measure of angle Q is 90°. If cosP = 5/13, and PQ = 2.5cm, then what is the length (in cm) of side PR?

A pen is sold at a discount of 36.36%. If the marked price of the pen is Rs 14300, then what is the selling price of the pen?

The HCF of 36,54 and 108 is

A right-angled triangle ABC is right-angled at B, and tan A = 4/3. If AC = 25 cm, the length of BC is

Simplify 11.9983 = ?

If secθ + tanθ = 4, then secθ - tanθ = ?

The factors of x2 + 8x + 12 are