Quantitative Aptitude - Arithmetic Ability Questions

Find the area (in sq.cm) of a semi-circle of radius 7 cm

What number should be added to each of the numbers 94, 24, 100 and 26, so that the resulting numbers are in continued proportion?

What is the simplified value of tan (θ/2) + cot (θ/2)?

If 20 men working 8 hours per day can complete a piece of work in 21 days. How many hours per day must 48 men work to complete the same job in 7 days?

A vendor buys 6 bananas for Rs 25 and sells them at 3 for Rs 20. What is his profit percentage?

X can finish 25% of a work in a day. Y can do 12.5% of the same work in a day. In how many days, will both of them finish the work together?

Simplify (b2x 3a2z4 ) × (b2x 4a4z3 )/(a3b2z4 )

If sin ­- 5π/3 = x, then the value of x is