If p is a prime such that (p – 1)/4 and (p + 1)/2 are primes, then  how many values of p are possible.
i) 0
ii) 1
iii) 2
iv) 3
v) More than 3

Solve our previous ‘questions of the day’

Quant Question Of The Day: 41

Quant Question Of The Day: 40


  1. Samyak Jain

    Sir, I used the fact that all the prime numbers are of the form 6n+1 or 6n-1. I replaced the value of p with the above two values and I found no solution.

  2. 1
    I used hit and trial method and only 13 is that value of p that gives the other two primes .

    is there any other solution ?

XHTML: You can use these tags: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

Recent Forum Posts/Questions/Answers