Math Chapter Wise question with answer

Q01 The value of the sum (((()))) 13 n n 1 n 1 i i, + = + ∑ ∑ where (()) i 1 = − = − equals: English · PGT 2002 Q02 The nth roots of unity can be arranged as- English · UPPSC GIC 2021 Q03 If 1, Z1,Z2,..........Zn–1 be the nth root, then (()))((())) ((()) 1 2 n 1 1 Z 1 Z.............. 1 Z − − − − − − −... English · PGT 2013 Q04 nth cube root of the unit will be: English · TGT 2011 Q05 If 1, ω, ω2 are the cube roots of unity, then the value of (1 + ω2)(1 + ω4) (1 + ω8)(1 + ω16) is English · UP TGT 2021 Q06 The three cube roots of z = –8i are English · LT 2018