If p, q, r are prime numbers such that `p^(2)-q^(2)=r` then which of the following options are correct ?

The mean of p, q, and r is same as the mean of q, 2r, and s. then which of the following is correct ?

If p,q and r are prime numbers such that r=q+2 and q=p+2 , then the number of triples of the form (p,q,r) is

If p,q,r,s are natural numbers such that p>=q>=r If 2^(p)+2^(q)+2^(r)=2^(s) then

For a reaction P+ Q to 2R +S which of the following statement is correct ?