Quantitative Aptitude - Arithmetic Ability Questions

AD is the Median of Δ ABC. If O is the centroid and AO = 10 cm then OD is

ΔABC is isosceles having AB = AC and ∠A = 40°. Bisectors PO and OQ of the exterior angles ∠ABD and ∠ACE formed by producing BC on both sides, meet at O. Then the value of ∠BOC is

ΔPQR is right angled at Q. If cosP = 3/5, then what is the value of cosR ?

Each exterior angle of a regular polygon measures 9 deg. How many sides does the polygon have?

The pair of linear equations 3x + y = 1 and px + 2y = 5 has no finite solution if

If Tan A = 15/8 and Tan B = 7/24, then Tan (A - B) = ?

In triangle DEF measure of angle E is 90 deg. If cotD = 5/12 and DE = 1 cm, then what is the length (in cm) of side EF?

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 options.