jlgdr wrote:
gmatpapa wrote:
What is the tenth digit to the right of the decimal point, in the decimal expansion of (1/5)^10
(A)0
(B)2
(C)4
(D)6
(E)8
(A)0
(B)2
(C)4
(D)6
(E)8
Yeah actually 1/5 = 0.2 = 2*10^-1
so 2^10 * 10^-10
2 has sequence 2,4,8,6.
Hence digit will be 4
Answer is C
Hope it helps
Cheers!
J
hi
is it possible to find out the tenth digit of the expression without further simplification made to "2^10"....?
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