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alex.gellatly
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(1/5)^m = 1/(5^m)
(1/4)^18 = 1/(4^18) = 1/(2^36)
Hence, (5^m)*(2^36) = 2*(10^35) = 2*(2^35)*(5^35) = (2^36)*(5^35)
Comparing the powers, m = 35
The correct answer is D.
