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A. 1.2.3.4,………
B. 1.2.3……(n-2) (n-1) (n)
C. n. (n-1) (n-2)…………..3.2.1.0
D. None of these

Correct Answer: B. 1.2.3……(n-2) (n-1) (n)

Last Updated: October 05, 2021