Quantitative Aptitude - Arithmetic Ability Questions

3cosA is equal to

Select the odd number from the given alternatives.

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:3 and area of ΔABC is 100 sq cm, what is the area (in sq cm) of quadrilateral BDEC?

The average of 8 consecutive integers is 23/2. What is the average of first three integers?

In ΔPQR measure of angle Q is 90°. If tanP = 4/3, and PQ = 1.5cm, then what is the length (in cm) of side PR?

Simplify 50 + 18 - 8

If 5x/2 - [7(6x - 3/2)]/4 = 5/8, then what is the value of x?

If D and E are points on the sides AB and AC respectively of a triangle ABC such that DE||BC. If AD = x cm, DB = (x – 3) cm, AE = (x + 3) cm and EC= (x – 2) cm, then what is the value (in cm) of x?