this a bit of tricky question and u need 2 use the materiality concept....
take 10^2 common
10^2( 10^6-1)/10^2(10^5-10)
it leaves u with ( 10^6-1)/(10^5-10)
u can ignopre -1 and -10 because of matriality as we are take abt 10^6 and 10 is very immaterial..ignore it
10^6/10^5= 10 ....
hope it helps...
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