Factorize the expression 2y² + xy - 3x²

• A. 2y (y + x) - 3x²
• B. (2y - x)(2y + x)
• C. (3x - 2y(x - y)
• D. (2y + 3x)(y - x)

A regular polygon has 9 sides. What is the size of one of its exterior angles?

• A. 20°
• B. 40°
• C. 90°
• D. 140°

Which of the following pieces of information would be found in a typical debit note

• A. Customer code
• B. Date of invoice
• C. Brief reason for the debit
• D. E & O.E

In metallic solid, the forces of attraction is between the mobile valence electrons and the

• A. atoms
• B. neutrons
• C. negative ions
• D. positively charged nuclei

Reorganise the following sentences into the order in which they were originally written X: They give special practice at improving your ability to calculate. Y: Where you see QR beside an exercise or a question, this stands for Quantitative Reasoning. Z: You should do and discuss these questions with your teacher and classmates.

• A. XYZ
• B. XZY
• C. YXZ
• D. YZX

What quantity of electrons (in mole) is lost when one mole of iron (ll) ions is oxidized to iron (lll) ions?

• A. 4mole
• B. 3 mole
• C. 2 mole
• D. 1 mole

The inductive reactance in a circuit of frequency 100Hz is 1ohms. Calculate the inductance of the inductor[π = 3.14]

• A. 2.00 x 10\(_{-3}\)H
• B. 1.59 x 10\(_{-3}\)H
• C. 1.09 x 10\(_{-3}\)H
• D. 6.28x 10\(_{-3}\)H

The high rate of inflation in Nigeria can be attributed to

• A. increasing cost of production
• B. the appreciation of the naira
• C. decreasing cost of production
• D. high capacity utilization

The major teaching in Surah an Nasr(Q. 110) is that

• A. after difficulty comes ease
• B. death is inevitable
• C. Islam has a bright future
• D. man must strive to succeed in life

The amount of methane molecules, CH₄ in 8.0 grams of methane is

• A) 8 mol
• B) 128 mol
• C) 0.5 mol
• D) 3.01