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0.123 is equal to:
a)122 / 990
b)122 / 100
c)122 / 99
d)None of these
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122/100=1.22 and
122/99=1.232323.... so d will b the correct answer
let x=0.123(bar on 3)
x=0.123333......---------(1)
multiply 10 on both sides
10*x=10*0.12333...
10x=1.2333.....---------(2)
(2)–(1)
10x=1.2333...
x=0.1233...
__________
9x=1.11
x=1.11/9
x=111/900
option (d) is correct
none of these