An element of a commutative ring R(1 0) is nilpotent if __________

Question

McqOptions · Accepted Answer

an = 1, for some integer n

McqOptions · Answer

a+1=0

McqOptions · Answer

an = 0, for some positive integer n

McqOptions · Answer

a2 = 0

1.	An element of a commutative ring R(1 0) is nilpotent if __________
A.	a+1=0
B.	a<sup>n</sup> = 0, for some positive integer n
C.	a<sup>n</sup> = 1, for some integer n
D.	a<sup>2</sup> = 0
Answer» C. a<sup>n</sup> = 1, for some integer n

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