Question

. For what value of k, 2 k - 1,7 and 3 k will form an A.P. ?
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Answer 1

Answer:

3

Step-by-step explanation:

k=3

2(3)-1=5

7

3(3)=9

A.P.=3,5,7,9

this will maintain common differnce of 3

Answer 2

Answer:

The value of k is 3

Step-by-step explanation:

For an A.P. to exist, the difference between two consecutive numbers should be equal. Therefore, to find out the value of k here, the following condition should be satisfied:

3k - 7 = 7 - (2k - 1)

Therefore, 3k - 7 = 8 - 2k

=> 5k = 15

=> k = 3