Online worksheet · 2 of 4

One example can disprove an always claim - Online practice 2

Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.

Read before answering

Reasoning card. Claim to test: 'Every rectangle is a square.' Separately consider the sum of two odd integers. A single valid counterexample disproves an 'always' claim, while several confirming examples do not establish a universal result. State the number domain used in a general argument.

Worksheet preview

This exercise is included in the paid course. Full-course fee: GBP 200.00 once. Register and enrol to complete all course exercises and download the course PDFs. Access begins after payment is confirmed.

Already registered? Sign in