1) 243n5×32n+19n×3n−1=? A) 1 B) 3 C) 9 D) 27 Answer: Option CExplanation:Given Expression =243n5×32n+19n×3n−1 =(35)n5×32n+1(32)n×3n−1 =3(5×n5)×32n+132n×3n−1 =3n×32n+132n×3n−1 =3n+2n+132n+n−1 =33n+133n−1 =3(3n+1−3n+1) =32=9