Divam kumar Asked a Question
December 12, 2020 12:40 pmpts 30 pts
43 If- P P p is the canonical represcntation, then (A) om)- 1 (B) 4()=R (C) o()-p4(1) (D) None of these 44. A positive integer a is called . umber if the sum of its proper divisors is equal to a. (A) Fermat's (B) Euler's (C) Perfect (D) None of these 45. Which of the following is a perfect number ? (A) 6 (B) ()Both (A) and (13) D) None of these 46, 1f n is an integer 2 2 such that 2- 1 is prime, then is a perfect number. (B) 2-1 (D) None of these (A) 2-1 (C) 2-(2-1) 47. The congruence x w a (mod p) solvable, then it has exactly Solutionts) (B) (A) 0 (C) 2 (D) None of these 48. If(a, b)=1, then (A) a2 1(mod p) (B) a2-I (mod p) (C) cithera 2-1(mod p) or a 2 --1(mod p) (D) None of these (9) XEH-3)-MAT(B)0
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