Question

( log _{10}left[frac{a+10 b+10^{2} c}{10^{-4} a+10^{-3} b+10^{-2} c}right] ). Qasing ( 10^{-4} ) common from
( =log _{10} frac{1}{10^{-4}}left[frac{a+10 b+10^{2} c}{a+18 b+10^{2} c}right] )
as a ( eq 0 ) denominala ( b eq 0 ) an't be 0
( =operatorname{cog}_{10} 110^{4}=4 operatorname{cog}_{10} 10=4 )
Ens
4

# a+10b+102c 21. (A) a-p. b-p& l u (D) a-5, U TU (C) a-tb-r&p.c-pd-9 ab.c 0 belongs to the set {0...9} then log10 10 4a +10-3b+10-20 (C) 3 (B) 2 order of the following (D) 4 (A) 1 2

Solution