# Session 1: Combinations
In previous weeks you learnt about significant figures, uncertainties, and basic operations on them. Start by attempting the preparation questions (Q1, Q2) in your notes; if you cannot do them, you need more practice before starting this session.
# Homework
Complete the Measurement stack Q4-7, 11-16 by (Sun) 21:00. This should take no more than 45 minutes.