Home of real teaching & learning
  • Full support for teachers
  • Focus on critical thinking
  • Engaging classroom activities
  • Integrated student eBook
  • Assessed tasks / qBank
  • Practice exam questions
Find out more Download brochure

The InThinking Guarantee: Our sites are written by expert practitioners and not by AI

See our AI policy

Disclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.

Don't miss out, find out!

P.o.t.W. #2

■ GDC is allowed ■ for SL and HL students The rules for a lottery are as follows. Each lottery ticket costs $10. When a person purchases a lottery ticket they select five different numbers from 1 to 12 inclusive. For example, a set of numbers on a ticket could be the numbers 1, 4, 7, 10 and 12. When the lottery comes to an end, five different numbers from 1 to 12 are randomly chosen as the ‘winning’ set of numbers....

Help