A solid hemisphere has a radius of 7 cm. Find the total surface area.

• A. 400 cm²
• B. 462 cm²
• C. 66 cm²
• D. 308 cm²

The time taken to do a piece of work is inversely proportional to the number of men employed. If it takes 30 men to do a piece of work in 6 days, how many men are required to do the work in 4 days?

• A. 20
• B. 35
• C. 45
• D. 60

The volume of a cylinder whose height is 4cm and whose radius 5cm is equal to (Ï€ = 3.14)

• A. 3.13cm²
• B. 145cm²
• C. 314cm²
• D. 214cm²

If 2₉ x (Y3)₉ = 3₅ x (Y3)₅, find the value of Y.

• A. 4
• B. 3
• C. 2
• D. 1

Find the sum of the roots of the equation 2x² + 3x - 9 = 0

• A. -18
• B. -6
• C. \(-\frac{9}{2}\)
• D. \(-\frac{3}{2}\)

Bunmi sold a suit in her mother’s shop with a price tag of N20 000 at a discount of 5%, how much did the buyer pay?

• A. N19 905
• B. N19 800
• C. N19 600
• D. N19 400

If x = \(\frac{2}{3}\) and y = - 6, evaluate xy - \(\frac{y}{x}\)

• A. 0
• B. 5
• C. 8
• D. 9

Subtract 16418₉ from 18630₉

• A. 1121₉
• B. 2112₉
• C. 2113₉
• D. 2211₉

Simplify \(\frac{3\frac{2}{3} \times \frac{5}{6} \times \frac{2}{3}}{\frac{11}{15} \times \frac{3}{4} \times \frac{2}{27}}\)

• A. \(5\frac{2}{3}\)
• B. 30
• C. \(4\frac{1}{3}\)
• D. 50

If x + y = 2y - x + 1 = 5, find the value of x

• A. 3
• B. 2
• C. 1
• D. -1