Quantitative Aptitude - Arithmetic Ability Questions

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 ?

Average age of 5 students of a school is 14 years. The average age of students and their Mathematics and science teachers is 30 years. If the age of science teacher is 6 years more than the age of Mathematics teacher, then what is the age (in years) of Mathematics teacher?

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

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 32448 and Rs 33745.92 respectively, what is the rate of interest?

Square root of 0.9 is equal to

If the measure of the interior angle of a regular polygon is 120 deg then how many sides does it have?

The number of sides of a regular polygon whose exterior angles are each 72 deg is