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

Which of the following points does not lie on the line 2y + 5x -4 = 0?

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

Find the variance of the numbers k, k + 1, k + 2.

Which of these is a measure of location?

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

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

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.

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

One of these is not a desirable feature of a good statistical table

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

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

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

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

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?

Two dice are thrown. What is the probability that the sum of the two numbers obtained is greater than 10?

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?

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. After how many sessions does Ann swim 50 lengths for the first time?

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

If 35 is the median of the data set including 21, 7, 45, 33, 62 and x, then x =

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

If x and y represent the mean and the median respectively of the following marks of students in a Mathematics test; 11, 12, 13, 14, 15, 16, 17, 18, 19, 21. Find x/y correct to 1 decimal place.

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?

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?

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

Justice starts a 5km walk from P on a bearing 0230. He then walks 4km on a bearing of 1130 to Q. What is the bearing of Q from P?

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 the length of an arc of a circle with a radius of 5 if it subtends an angle of 60° at the center?

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?

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

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

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

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

A _______ variation is one whose values convey the concept of attribute rather than number.

In an arithmetic sequence whose 4th term is 14 and whose 11th term is 70, the first term and common difference are

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

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?