An ice-cream shop offers 10 distinct flavours, 3 of which are chocolate-based
MATHEMATICS · Subjective · A Level · Mathematics · Sequences and series · Sequences and series
Problem
An ice-cream shop offers 10 distinct flavours, 3 of which are chocolate-based. A customer buys a box containing 6 different flavours (no flavour repeated). Determine the number of possible boxes if the selection must include at least 2 of the chocolate-based flavours.