A chocolate factory produces several types of chocolate, some of which have nut centres. The chocolates are mixed together and are randomly packed into cartons of ten.

Build a spreadsheet to simulate 50 cartons of chocolates when each carton contains 10 chocolates, and when one-seventh of the chocolates have nut centres. Your spreadsheet should include 50 rows representing the 50 cartons, each row containing 10 columns to represent the chocolates.

Incorporate in your spreadsheet a count of how many cartons contain fewer than two nut centres, and hence estimate (to the nearest whole number) the percentage of a cartons containing fewer than two nut centres: %