If 0.0ababab....=2/55, find the value of a×b?
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0.0abab..... = 2/55
0.abab..... = 20/55 ......(1) (multiply with10 on both sides)
ab.abab... =2000/55 ......(2) (multiply with 100 on both sides)
(2) - (1)
ab = 1920/55 = 36
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