**1. How many seconds are there in 24 hours?**

*86,400*

**2. What is 4 cubed?**

*64*

**3. What is two-sevenths of 147?**

* 42*

**4. If you know the radius of a circle, how do you calculate the circumference?**

multiply by ‘pi’ and by 2 (2π r)

**5. A school has 800 students and on one day of severe illness 27% of the students are absent. How many students attend school on that day?**

*584*

**6. What is a polyhedron?**

*A three-dimensional solid with flat faces, straight edges and vertices (sharp corners)*

**7. What is the mean of the following set of numbers: 5, 27, 43, 7, 2 and 6?**

*15*

**8. What is two-fifths of a half?**

*two-tenths (or 0.2)*

**9. What was the year 1976 as a Roman Numeral?**

*MCMLXXVI*

**10. What is the next number in the sequence: 17, 29, 53, 101, 197, …?**

*389 (multiply the previous number by two and then subtract five)*

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