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Bunuel
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Is 5m^k > 50k? 04 Jan 2017, 01:59
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E
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15% (low)

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80% (01:10) correct 20% (01:11) wrong based on 164 sessions

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Is 5m^k > 50k?

(1) k is a positive number.
(2) m is a positive number.
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E
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Is 5m^k > 50k? 04 Jan 2017, 07:41
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Bunuel
Is 5m^k > 50k?

(1) k is a positive number.
(2) m is a positive number.
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(1) no info on value m....not suff
(2) no info on value k....not suff

combined if m=k=1 then 5m^k < 50k
but if m=20 , k=1 then 5m^k > 50k

not suff

Ans E
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Is 5m^k > 50k? 04 Jan 2017, 11:43
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m^k>10k & m, k are positive incl (fractions)

1) not sufficient
2) not sufficient

1) & 2) many possibilities.. not sufficient

E.



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Is 5m^k > 50k? 24 Jan 2017, 17:53
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5m^k>5k is equivalent to 5*k*logm>50*k--> K's cancel out, so the problem depends on m regardless of what K is and the inequality is only correct if m is greater than 10^10

1- Not sufficient because K doesn't matter in this problem
2- Not sufficient because we don't know if m is less than or greater than 10^10.

Answer is E.
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Is 5m^k > 50k? 05 May 2020, 23:36
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