20
Jun
Question 1: Without actually performing the long division, state whether the following rational numbers will have a terminating decimal expansion or a non-terminating repeating decimal expansion:
Question 2: Write down the decimal expansions of those rational numbers in Question 1 above which have terminating decimal expansions.
Question 3: The following real numbers have decimal expansions as given below. In each case, decide whether they are rational or not. If they are rational, and of the form p/q, what can you say about the prime factors of q?
(i) 43.123456789
(ii) 0.120120012000120000. . .
(iii) 43.123456789123456789…
