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if the divisors of n=3^p.5^q.7^r are of the form 4k+1,k≥0. then (A) p+r is always even (B) p+q+r is always odd (C) q can be any integer (D) if p is odd then r is eve |
| Answer» if the divisors of n=3^p.5^q.7^r are of the form 4k+1,k≥0. then (A) p+r is always even (B) p+q+r is always odd (C) q can be any integer (D) if p is odd then r is eve | |