Can someone please tell me what is the best way to figure out the attached problem?
The answer is D) 35
Thanks a lot!
GMATPrep Problem
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1. Left hand side: (1/5^m) ( 1/4^18)
2. Left hand side: (1/5^m) (1/2^36)
3. Right hand side: ( 1/ (2 * (2* 5)^35) )
4. Right hand side: ( 1 / (2 * 2^35 * 5^35) )
5. Right hand side: (1 /(2^36 * 5^35)
6. 1/2^36 is same on both sides hence can be cancelled.
7. 1/5^m = 1/5^35
8. m= 35
2. Left hand side: (1/5^m) (1/2^36)
3. Right hand side: ( 1/ (2 * (2* 5)^35) )
4. Right hand side: ( 1 / (2 * 2^35 * 5^35) )
5. Right hand side: (1 /(2^36 * 5^35)
6. 1/2^36 is same on both sides hence can be cancelled.
7. 1/5^m = 1/5^35
8. m= 35