Question

2. Write down the decimal expansions of those rational numbers in Question 1 above
which have terminating decimal expansions.
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 , what can
you say about the prime factors of q?
0 43.123456789
(ii) 0.120120012000120000... (m) 43.123456789

hyy guys.....
help me plzz.....
answer questions no. 2&3.....
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Answer 1

well ur ques.is from ncert and ans 1 is

0.00416 ;2.125;0.009375 ; 0.7 ; 0.4

And ans 2 is 1 is rational of q can be written in either 2m or 5m

2 is not rational

3 is rational and q will have other factor than 2 and 5