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Consider an A.P. `a_1, a_2, a_3,......... ` such that `a_3+a_5+a_8=11 and a_4+a_2=-2,` then the value of `a_1+a_6+a_7` is (a). -8`` (b). 5`` (c). 7`` (d). 9

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CENGAGE ENGLISH-SEQUENCES AND SERIES-All Questions
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  2. If a1, a2, a3, be terms of an A.P. and (a1+a2+.....+ap)/(a1+a2+.....+...

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  3. Consider an A.P. a1, a2, a3,......... such that a3+a5+a8=11 and a4+a2...

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