If k + 5Pk + 1 = 11 (k-1)2. k + 3Pk , then the values of k are
A. 7 and 11
B. 6 and 7
C. 2 and 11
D. 2 and 6
Answer:B
If k + 5Pk + 1 = 11 (k-1)2. k + 3Pk , then the values of k are
A. 7 and 11 B. 6 and 7 C. 2 and 11 D. 2 and 6