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If the fourth term of the AP \((4, 4+d, 4+2d, 4+3d)\) is \(31\), then what is the second term?यदि AP \((4, 4+d, 4+2d, 4+3d)\) का चौथा पद \(31\) है, तो दूसरा पद क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \(13\)\(13\)
The fourth term is \(4+3d\). Given \(4+3d=31\), we get \(3d=27\Rightarrow d=9\). The second term is \(4+d=4+9=13\).चौथा पद \(4+3d\) है। दिया है \(4+3d=31\) तो \(3d=27\Rightarrow d=9\)। दूसरा पद \(4+d=4+9=13\) है।
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