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0.3454545…..=_____________(a) 345/1000(b) 350/995(c) 355/900(d) 342/990I got this question in exam.My question is based upon Real Numbers and their Decimal Expansions topic in section Number Systems of Mathematics – Class 9

Answer» RIGHT answer is (d) 342/990

To EXPLAIN I WOULD say: LET 0.3454545…=x

Then, 100x=34.54545…..

100x=34.2 + 0.3454545…

100x=34.2 + x

99x=34.2

Then, x=34.2/99

x=342/990.


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