I am x years old and my brother is 3 years older. How old was my brother last year?

• A. (x - 4)years
• B. (x + 2) years
• C. (3x - 10years
• D. (3x + 1)years

Factorize m(2a-b)-2n(b-2a)

• A. (2a-b)(2n-m)
• B. (2a+b)(m-2n)
• C. (2a-b)(m+2n)
• D. (2a-b)(m-2n)

Find the median of the set: 10,10,11,11,11,12,12,15,27,39

• A. 11.5
• B. 12
• C. 11
• D. 10

The population of students in a school is 810. If this is represented on a pie chart, calculate the sectoral angle for a class of 72 students

• A. 32°
• B. 45°
• C. 60°
• D. 75°

The roots of a quadratic equation are \(\frac{-1}{2}\) and \(\frac{2}{3}\). Find the equation.

• A. \(6x^2 - x + 2 = 0\)
• B. \(6x^2 - x - 2 = 0\)
• C. \(6x^2 + x - 2 = 0\)
• D. \(6x^2 + x + 2 = 0\)

Calculate the variance of \(\sqrt{2}\), (1 + \(\sqrt{2}\)) and (2 + \(\sqrt{2}\))

• A. 0
• B. \(\sqrt{\frac{2}{3}}\)
• C. \(\frac{2}{3}\)
• D. 2

4, 16, 30, 20, 10, 14 and 26 are represented on a pie chart. Find the sum of the angles of the bisectors representing all numbers equals to or greater than 16

• A. 48°
• B. 84°
• C. 92°
• D. 276°

Evaluate \(\frac{1}{3} \div [\frac{5}{7}(\frac{9}{10} -1 + \frac{3}{4})]\)

• A. \(\frac{28}{39}\)
• B. (\frac{13}{39}\)
• C. (\frac{39}{28}\)
• D. (\frac{84}{15}\)

What is the value of 3 in the number 42.7531?

• A. \(\frac{3}{10000}\)
• B. \(\frac{3}{1000}\)
• C. \(\frac{3}{100}\)
• D. \(\frac{1}{10}\)

A committee consists of 5 boys namely: Kofi, John, Ojo, Ozo and James and 3 girls namely: Rose, Ugo and Ama. In how many ways can a sub-committee consisting of 3 boys and 2 girls be chosen, if Ozo must be on the sub-committee?

• A. 35
• B. 30
• C. 18
• D. 12