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Question

Which of the following inequalities, where x is an integer, is/are satisfied by the solution set x=3,4,5?
(I) 3x>9 (II) x12 (III) x+35

A
II only
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B
I and II only
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C
II and III only
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D
I,II and III
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Solution

The correct option is C II and III only
Consider the given three inequalities for the solution set x=3,4,5
Therefore, substituting 3 in all the three inequalities
1) 3x>9
9>9 false (9=9 and is not greater the 9)
Therefore, given values of x are not the solution of above inequality.
2) x12
x2+1x3 and x is an integer
Hence, given values of x are the solution of above inequality.
3) x+35
Therefore, x>53 or x>2 and x is an integer
Hence, given values of x are the solution of above inequality.
Hence, the answer is option C.

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