nafishasan Posted February 6, 2012 Share Posted February 6, 2012 (edited) P is a prime number. If 6p is between 15 and 95, which of the following can be a value of 7p + 2? A. 15 B. 79 C. 121 D. 65 E. 21 Edited February 6, 2012 by nafishasan Quote Link to comment Share on other sites More sharing options...
Green Posted February 7, 2012 Share Posted February 7, 2012 Prime number is its divisor is either 1 or itself. 15 2.5 Since we want 7p + 2, we need to make the middle p to 7p + 2 multiply the inequality by 7 then plus 2 33.3 35.3 ACE is outside of the inequality. 65 is not a prime number. The answer is B, 79.:) Quote Link to comment Share on other sites More sharing options...
sandeep_chads Posted February 8, 2012 Share Posted February 8, 2012 Just put the values - It shouldn't take any time since the calculations are fairly easy: p = prime P = 3, 5, 7, 11, 13, 6P = 18,30, 42, 66, 78, 7P+2 = 23, 37, 51, 79, 93 Quote Link to comment Share on other sites More sharing options...
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