is:ਜੇਕਰ 5, 2 k -3, 9 A.P. ਵਿੱਚ ਹੋਣ ਤਾਂ ‘k’ ਦਾ ਮੁੱਲ ਪਤਾ ਕਰੋ। *
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Step-by-step explanation:
if a, b, c are in A.P, then b-a = c-b
=> 2k - 3 -(5) = 9 - (2k - 3)
=> 2k - 8 = -2k + 12
=> 4k = 20
=> k = 20/4 => 5
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