Question

Which of the following pair replaces? in series given.

Q 3 N, N 3 K, K 3 H 5 2 10, 10 2 20, 20 2 40 J 4 N, N 4 R, R 4 V

Q5J, N10N, ? , H40V

A K20S

B K19R

C L20R

D K20R

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Solution