hard
Mathematics
Mathematics Mental Workout
Arithmetic, algebra and a little geometry. No calculator.
6 questions 40s per question
Question 1 of 6
What is the value of π to two decimal places?
3.14
3.41
3.12
3.16
Question 2 of 6
If 3x + 7 = 22, what is x?
3
5
7
15
Question 3 of 6
What is the sum of interior angles of a triangle?
90°
180°
270°
360°
Question 4 of 6
What is 15% of 240?
24
30
36
40
Question 5 of 6
Which number is prime?
51
57
61
69
Question 6 of 6
What is the square root of 169?
11
12
13
14