Four numbers (k - 3), (k - 1), (k + 1) and (k + 5) are in proportion. – McqOptions

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1.	Four numbers (k - 3), (k - 1), (k + 1) and (k + 5) are in proportion. Find the value of (k2 + k).
A.	110
B.	56
C.	30
D.	72
Answer» C. 30

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