Unilorin Post-UTME Mathematics 2021 (Model questions) past questions and answers

2 questions. Try each one, then open the answer to check yourself and read the explanation.

Question 4

Fractions, Decimals and Approximation

Simplify (1⅞ × 2⅖)/(6¾ ÷ ¾)

Show the answer and explanation

Answer: D (½)

Explanation

Numerator: 15/8 × 12/5 = 9/2. Denominator: 27/4 ÷ 3/4 = 9. So (9/2) ÷ 9 = ½.

Indices

If x = 64 and y = 27, evaluate (x^½ − y^⅓)/(y − x^⅔)

Show the answer and explanation

Answer: C (5/11)

Explanation

x^½ = 8, y^⅓ = 3 and x^⅔ = 16, so (8 − 3)/(27 − 16) = 5/11.