Three consecutive positive integers a, b and c are such that b² = 4(a + c). Find the value of c.

Divide the L.C.M. of 36, 54 and 90 by their HCF.

A ladder 20m long rests against a vertical wall so that the foot of the ladder 9m from the wall. The height (correct to 1 decimal place above the ground at which the upper end of the ladder touches the wall is

Given the list of numbers {1, 6, 3, 9, 16, 11, 2, 9, 5, 7, 12, 13, 8}, what is the median?

As a general rule, the _______ is the best measure of central tendency because it is more precise.

Find all the values of $x$ satisfying the inequality $-14\le 4-3x\le 31$

If un = 2, 6, 10, ..., the sum of the terms of the sequence above is

Paul and his friend, Peter went to buy an article costing ₦600. Peter had 10% of the cost and Paul, 40% of the remainder. How much did they have altogether?

Find the equation of the line through (5,7) parallel to the line 7x + 5y - 5 = 0.

If x = 2, then (x - 1)(2x - 3) =

Tunse bought a house for ₦1,250,000.00 and spent ₦350,000.00 to renovate it. He then sold the house for ₦2,000,000.00. What is the percentage gain?

P is the point (3, 5). Q is the point (-1, 9). R is the midpoint of PQ. Which one of the following lines does R lie on?

What is sin 30${}^{}$?

A class of all possible subsets of space S is called

If un = 2, 6, 10, ..., the 12th term of the sequence is

Ann goes swimming regularly. She wants to improve her fitness, so she decides to swim 10 lengths in the first session and increase the number of lengths she swims by 2 every session. When she reaches 50 lengths in a session she will not increase the number any further. If Ann asks her friend Joy to come swimming with her, Joy starts coming at Sue’s 8th session. Joy starts to swim 15 lengths and increases the number of the lengths by 5 each time. After how many of Joy’s sessions does she swim the same number of lengths as Ann?

The most frequently occurring number in a set of values is called the ______.

The ______ is the value you calculate when you want the arithmetic average.

A company employs 100 people, 65 of whom are men. 60 people including all the women are paid weekly. The number of the men that are paid weekly is

Find the value of p, if the line which passes through (-1, p) and (-2p, 2) is parallel to the line 2y + 8x - 17 = 0.

The lengths of the sides of a right-angled triangle are ym, (3y - 1)m and (3y + 1)m, find y.

A dealer increased the price of an item by 20%, and then increased the price of the same item by 30%. If x is the original price, what is the price after the two increases?

The length of a rectangle is three times its width. If the perimeter is 72 cm, the width of the rectangle is

No of children: 0, 1, 2, 3, 4, 5, 6
No of families: 7, 11, 6, 7, 7, 5, 3
Find the mode and median respectively of the distribution above.

At what value of x is the function y = x² - 6x - 7 minimum?

P is the point (2, 7) and Q is the point (6, 3). What is the gradient of PQ?

One of these is a demerit of a sample

Which of the following is the formula for range?

A straight line has the equation 10y = 3x + 15. Which of the following is true?

A chord 6.6m long is 5.6m from the centre of a circle. The radius of the circle is

Solve the simultaneous linear equations: 2x + 5y = 11, 7x + 4y = 2.

_________ are used when you want to visually examine the relationship between two quantitative variables.

Find the point on the Euclidean plane where the curve y = 2x² - 2x + 9 has 2 as gradient.

The graph of cumulative frequency distribution is called

In an arithmetic sequence whose 4th term is 14 and whose 11th term is 70, the sum of the first 12 terms of the sequence is

Find the distance between points A(-4, 5) and B(-3, 2).

In a class, 120 students speak English or French or both. 70 speak English and 55 speak French. How many speak English but not French?

Which of these is a measure of location?

What is the sum of the first 40 even positive integers?

The roof of a shelter is made from a piece of corrugated iron 2.3m long inclined at 18º to the horizontal. How far from the wall does the roof stick out?