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A math quiz for students and exam preparation — 15 medium-level questions on statistics, geometry and algebra.
1. What is the mode of the numbers 2, 3, 3, 5, 7?
💡 The mode is the most frequently occurring value, which is 3.
2. What is the value of 0! (zero factorial)?
💡 By mathematical convention, 0! is defined as equal to 1.
3. What is the probability of rolling a 4 on a standard six-sided die?
💡 There is one favorable outcome out of six possible outcomes, giving a probability of 1/6.
4. What is 2/5 of 100?
💡 2/5 of 100 is calculated as (2/5) x 100 = 40.
5. What is the sum of angles in a pentagon?
💡 The interior angles of a pentagon sum to 540 degrees.
6. What is the value of π (pi) rounded to two decimal places?
💡 Pi is approximately 3.14159, which rounds to 3.14.
7. What is the formula for simple interest?
💡 Simple interest is calculated as Principal x Rate x Time.
8. What is the value of x if 3x + 6 = 21?
💡 Subtracting 6 then dividing by 3 gives x = 5.
9. What is 8 squared minus 4 squared?
💡 8² - 4² = 64 - 16 = 48.
10. What is the mean of the numbers 2, 4, 6, 8, 10?
💡 Adding the numbers gives 30, and dividing by 5 gives a mean of 6.
11. What is 15% expressed as a decimal?
💡 15% equals 0.15 as a decimal.
12. What is the median of the numbers 3, 7, 9, 15, 21?
💡 When arranged in order, the middle value of these five numbers is 9.
13. What is the formula for the area of a circle?
💡 The area of a circle is calculated using πr², where r is the radius.
14. If a train travels 60 miles in 2 hours, what is its average speed?
💡 Speed equals distance divided by time: 60 / 2 = 30 mph.
15. What is the range of the numbers 4, 8, 15, 16, 23?
💡 The range is the largest value minus the smallest: 23 - 4 = 19.