Geometry
& Measurements
Algebra & Functions
Probability & Statistics
Applied Math
Brain Teasers
100

A rectangle has length 12cm and width 8cm. Find its area.

97cm²

100

Solve for x

2x + 5 = 13

4

100

The following is rank order list of an exam result.

87, 82, 78, 76, 70, 66, 64, 59, 59, 59, 51, 49, 48, 41

What is the medium result? 

61.5 

100

A train travels 120km in 2hours. What is its average speed?

60km/h

100

I am a number between 1 and 10

I am even and greater than 4 

What number could I be?

6,8 or 10 

200

The circumference of a circle is 31.4cm find the radius (pi = 3.14)

5cm

200

Function g is defined by g(x) = 3(x + 8x). What i a the value of g(12)?

324
200

A woman buys a car for $350,000 an sells it for $374,500. Her son buys a bicycle for $8000 and sells it for $8600, which one makes the greater profit per cent (%).

Son's profit percentage is greater 

200

A shop sells pencils at $15 each, if you buy 12 pencils, how much do you pay?

$180

200

I have keys but no locks

I have space but no room 

You can enter bent can't go inside 

What am I?

A Keyboard 

300

A triangle has base 10cm and height 12cm. Find ita area. 

60cm²

300

A teacher has 6 pens, n of them are red, the rest are blur. How many blue pens does the teacher have?

6 - n

300

Two fair dice are rolled: 

What is the probability that the sum is divisible by 3?

1/3 

300

A car uses 8 liters of gas to travel 100km. How much gas will it take it to use to travel 250km?

20L

300

A farmer had 17 sheep and all but 9 ran away. How much sheep are left?


9 sheep are left 

400

A cylinder has radius 7cm and height 10cm. Find its volume. (pi = 3.14)

1538.6cm²

400

Give a factor of the expression, 2x³ + x² + 3x - 6?

(x-1) (2x² + 3x + 6) 

400

The table shows the number of books read by students. 

Books        0 1 2 3

Students   2 5 7 6 

Find the mean number 

1.85 books 

400

A recipe needs 3 cups of flour to make 12 muffins. How many muffins can be made with 5 cups of flour?

20 

400

You see me once in June, twice on November and not at all in May what am I?

The letter " e "

500

A rectangle tank measures 5m long,3m wide and 2m high. Find its volume in liters.

30,000 L

500

If the gradient of a line at point (1,4) is 8, what is the equation of that line?

y = 8x - 4

500

The test scores of the students are: 

45,50,55,60,60,65,65,70,75,80,80,90

If the passing mark is 60, what percentage of students passed the test?

75% of students passed the test 

500

A worker earns $4500 per month. He gets a 10% increase in salary and then spends 25% of his new salary on rent. How much money does he have left after paying rent?

$3712.50 left 

500

I am a three digit number 

My tens digit is 5 more than my ones digit 

My hundreds digit is 8 less than tens digit 

What number am I?

194