Decimal Day use pennies or threepenny pieces, to pay them in multiples of 6d (p, the lowest common multiple of the two systems). Bus companies (at that time many state-owned by the National Bus Company) were another exception, going decimal on Sunday 21 February. Decimal Day itself went smoothly. Criticisms included the small size of the new halfpenny coin and the fact that some traders had taken advantage of the transition to raise prices. Some used new pennies as sixpences in vending machines. After 15 February, shops continued to accept payment in old coins, but always issued change in new coins. The
Decimal enough (for all "n" greater than some natural number "N"). If all "d" for "n" > "N" equal to 9 and the limit of the sequence formula_9 is the decimal fraction obtained by replacing the last digit that is not a 9, i.e.: "d", by "d" + 1, and replacing all subsequent 9s by 0s (see 0.999...). Any such decimal fraction, i.e., "d" = 0 for "n" > "N", may be converted to its equivalent infinite decimal expansion by replacing "d" by "d" − 1, and replacing all subsequent 0s by 9s (see 0.999...). In summary, every real number that