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Which of the following numbers has the greatest number of distinct

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Which of the following numbers has the greatest number of distinct  [#permalink]

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New post 13 Apr 2016, 05:12
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

78% (01:37) correct 22% (01:24) wrong based on 161 sessions

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Re: Which of the following numbers has the greatest number of distinct  [#permalink]

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New post 13 Apr 2016, 05:28
165=3*5*11
192=2^6 *3
228=2^2 *3*19
330=2*3*5*11
332=2^2 * 83

330 has 4 distinct prime factors
Answer D
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Re: Which of the following numbers has the greatest number of distinct  [#permalink]

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New post 14 May 2017, 04:31
is trial and error the only way to solve this, or is there a trick to eliminate the obvious ones?
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Re: Which of the following numbers has the greatest number of distinct  [#permalink]

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New post 14 May 2017, 04:34
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Re: Which of the following numbers has the greatest number of distinct  [#permalink]

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New post 18 May 2017, 19:01
Bunuel wrote:
Which of the following numbers has the greatest number of distinct prime factors?

A. 165
B. 192
C. 228
D. 330
E. 332


We can express each answer choice as a product of its prime factors:

A) 165

165 = 5 x 33 = 5 x 11 x 3

165 has 3 distinct prime factors.

B) 192

192 = 8 x 24 = 8 x 8 x 3 = 2^6 x 3^1

192 has 2 distinct prime factors.

C) 228

228 = 4 x 57 = 2^2 x 57

228 has 2 distinct prime factors.

D) 330

330 = 10 x 33 = 2 x 3 x 5 x 11

330 has 4 distinct prime factors.

E) 332

332 = 4 x 83 = 2^2 x 83

332 has 2 distinct prime factors.

330 has the greatest number of distinct prime factors.

Answer: D
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Re: Which of the following numbers has the greatest number of distinct  [#permalink]

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New post 04 Jul 2017, 06:20
Bunuel wrote:
ameyaprabhu wrote:
is trial and error the only way to solve this, or is there a trick to eliminate the obvious ones?


Yes, you should do prime factorization to get the answer.


Bunuel mean there is no way out except applying factroization on every question it is taking time it took my 2 minutes :(
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Re: Which of the following numbers has the greatest number of distinct  [#permalink]

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New post 26 Nov 2018, 17:38
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Re: Which of the following numbers has the greatest number of distinct &nbs [#permalink] 26 Nov 2018, 17:38
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