Question

The number of improper subgroups of G = { 1, -1, i, -i } w. r. t multiplication is??????
(a)2 (b) 3 (C)4 (d) 1

Answer 1

Answer:

2 because improper subgroup itself means G itself and e or identity element.

Answer 2

Answer:

2

Step-by-step explanation:

Improper subgroup : For an any group G, subgroup which consist of G itself is called as improper, rest are all proper.

So by definition maximum no. of improper subgroup in any group G will be 2.