The sum of the first 20 terms of the progression 3, 6, 12, ... is

A class of all possible subsets of space S is called

The heights in cm, of 10 children are 145, 163, 159, 162, 167, 149, 150, 160, 170, and 155. The mean height of the children is

List the integral values of which satisfy the inequality $-2<7-3x\le 10$.

Rationalize $\frac{(4\sqrt{7}+\sqrt{2})\; /}{(\sqrt{2}-7)}$

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?

A ladder resting on a vertical wall makes an angle whose tangent is 2.5 with the ground. If the distance between the foot of the ladder and the wall is 60 cm, what is the length of the ladder?

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

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

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

AAUA allocations to various faculties in a school budget are as follows:

Science: ₦35,000,000.00
Education: ₦25,000,000.00
Law: ₦20,000,000.00
Social and Management: ₦20,000,000.00.
In a pie chart to represent this information, the corresponding angle to science is

If x and y are two real numbers such that 3x + 2y = 5 and 5x + 4y = 9, then 4x + 3y =

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

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

The heights in cm, of 10 children are 145, 163, 159, 162, 167, 149, 150, 160, 170, and 155. The standard deviation of the heights of the children is

In a survey of villagers, it is found that 20% of the people have visited Kano and 25% have visited Port Harcourt. If 5% have been to both cities, then the percentage that have visited neither Kano nor Port Harcourt is

A frustum of a pyramid is 3cm square at the top and 6cm square at the bottom and is 5cm high. The volume in cm³ of the frustum is

What is the slope of the line that is perpendicular to y - 2x = 1?

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?

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

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

A is the point (1, 5), B is the point (4, 7) and C is the point (5, 2). Triangle ABC is

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

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. Ann decides she will give herself a reward
when she has swum a total of 400 lengths. After how many sessions does she get her reward?

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

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

Find the sum to infinity of the following series 3 + 2 + 4 + 4/3 + 8/9 + 16/27 + ......

The chances of three independent events P, Q, R occurring are $\frac{\mathrm{1/}}{2}$, $\frac{\mathrm{2/}}{3}$,$\frac{\mathrm{1/}}{4}$ respectively. What are the chances of P and Q only occurring?

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?

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.

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

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?

If un = 2, 6, 10, ..., the last tem of the sequence is 90. The number of terms in the sequence is

A rectangular box with a square base and no top has a volume of 500 cm, the dimensions of the box that require the least amount of material are

Which of the following is the formula for range?

Mr. Robson bought bags of orange for ₦2,500 each. He sold them for ₦90,000 at a loss of 20%. How many bags of orange did he buy?

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?

A straight line has a gradient of -2 and passes through the point (4, 1). What is its equation?

Which of these is a measure of location?