Math Chapter Wise question with answer

Q01 The smallest positive integer value of n for which ((()) 1+ + n i is a pure imaginary: English · PGT 2013 Q02 The smallest positive integer n for which the real part of (1+i)n is zero is– English · UP PCS (Pre) 1995 Q03 The least positive integer value, of n, if n 1 + = − i is: English · KVS PGT 2023 Q04 If i 1 = − = − and n is positive integer, then n n 1 n 2 n 3 i i i i + + + + + + + + + + + + + + + + + + + + + + +... English · JDD-75-PGT TIER II-X-15 28.06.2015 Q05 The least positive integer n for which n 1 i + − is real, is? English · PGT 2004 Q06 If n is a positive integer, then– n n 3 i 3 i is equal to – English · (GIC) Lecturer 2015