Let g be a group, h a subgroup of g and n be a normal subgroup of g. show that k=c_g(h) ∩ c_g(n) is a normal subgroup of n_g(h) and that the quotient group n_g(h)/k is isomorphic to a subgroup of aut(hn).

x-3y=4

step-by-step e

3,6 and 7.

step-by-step explanation:

a) unit place of 37 is 7

so the unit place of cube of 37 will be

7³= 343=3

the answer is 3.

b) unit place of 56 is 6, so the unit place of cube of 56 will be

6³= 216=6

the answer is 6.

c) unit place of 133 is 3, so the unit place of cube of 133 will be

3³= 27= 7.

the answer is 7.