6. What is the next number in the series; 1, 4, 9, 16, …?
- 23
- 25
- 24
7. What is the formula 2πR for? (π is the symbol for ‘pi’)
- The circumference of a circle
- The radius of a circle
- The area of a circle
8. If a bag of 30 sweets weighs 20g, how many sweets would weigh 1kg?
- 1500
- 1550
- 1400
