Square. 14. t(m) 1s odd if and only it n is a (b) dd (a) even (d) none of these perfect 15 ifa is an integer greater than 1, then nd is equal to: (b) 2 (a) (d)

square. 14. T(M) 1s odd if and only it n iS a (B) dd (A) even (D) None of these perfect 15 Ifa is an integer greater than 1, then nd is equal to: (B) 2 (A) (D) None of these 16. Behaviour of a (m) is (A) Regular (B) Iregular (C) Periodic (D) None of these (12) is (A) 5 (8) 6 C) 28 (D) None of these 18. Every number containing more than twO digits can be dividcd by - 11 the number formed by its last two digits can be divided by 4. 2 D) (C) 4 (D) None of these 9. Every even pertect number has the last digit (A) 6 B) 8 (C) either 6 or 8 (D) None of these 20. 1f amb (mod n) and bm c(mod n) then: (A) ab (8) auc (C) am c(mod n) (D) None of these XEH3)-MAT(8)8