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How many prime numbers are there between the integers 7 and X, not-inc

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Manager
Joined: 26 Dec 2018
Posts: 142
Location: India
How many prime numbers are there between the integers 7 and X, not-inc  [#permalink]

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08 Jan 2019, 10:10
00:00

Difficulty:

25% (medium)

Question Stats:

82% (01:27) correct 18% (00:54) wrong based on 30 sessions

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How many prime numbers are there between the integers 7 and X, not-inclusive?

(1). 15 < X < 34
(2). X is a multiple of 11 whose sum of digits is between 1 and 7

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Joined: 09 Mar 2018
Posts: 1004
Location: India
Re: How many prime numbers are there between the integers 7 and X, not-inc  [#permalink]

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08 Jan 2019, 10:29
1
UB001 wrote:
How many prime numbers are there between the integers 7 and X, not-inclusive?

(1). 15 < X < 34
(2). X is a multiple of 11 whose sum of digits is between 1 and 7

Statement 1
X can be any value between 15 and 34, there by not giving any particular answer to the question stem.
Not sufficient

Statement 2
X can be 2 values, 22 and 33.
This will give 2 different answers to the question stem.
Not sufficient

Combining both the statements will again give us 2 values, 22 and 33

When substituted in the question stem, will give different values
7 < x < 22, 5 prime numbers
7< x < 33, 8 prime numbers

Even combining both the statements is not giving us a definite answer.

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Re: How many prime numbers are there between the integers 7 and X, not-inc   [#permalink] 08 Jan 2019, 10:29
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