The mass (in grams) of a radioactive substance is measured at the start of each…
MATHEMATICS · Multi-part · A Level · Mathematics · Sequences and series · Sequences and series
Problem
The mass (in grams) of a radioactive substance is measured at the start of each 12-year interval. At the beginning the mass is M grams and after every 12 years the mass becomes half of the previous measurement.
(i) Write the first four terms of the sequence representing its mass at these measurements.
(ii) State the common ratio of this sequence.