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Question
If k,2k−1 and 2k+1 are three consecutive terms of an A.P., the value of k is
If k,2k−1 and 2k+1 are three consecutive terms of an A.P., the value of k is
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Solution
The correct option is B 3
The three consecutive terms k,2k−1 and 2k+1 are an A.P., then
We know that, second term - first term = third term - second term
2k−1−k=2k+1−2k+1
k−1=2
k=3.
The three consecutive terms k,2k−1 and 2k+1 are an A.P., then
We know that, second term - first term = third term - second term
2k−1−k=2k+1−2k+1
k−1=2
k=3.
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