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Mathematics
Which is the greatest among (81)18,(243)15,(27)21 and (9)38 ?
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Q. Which is the greatest among $(81)^{18},(243)^{15},(27)^{21}$ and $(9)^{38}$ ?
Indices
A
$(243)^{15}$
B
$(27)^{21}$
C
$(9)^{38}$
D
$(81)^{18}$
Solution:
Make all powers have equal bases