1.If a1,a2,a3,…,ana_1, a_2, a_3, \ldots, a_na1,a2,a3,…,an are in A.P. and a1+a4+a7+…+a16=114a_1 + a_4 + a_7 + \ldots + a_{16} = 114a1+a4+a7+…+a16=114, then a1+a6+a11+a16a_1 + a_6 + a_{11} + a_{16}a1+a6+a11+a16 is equal to:a.646464b.989898c.383838d.767676Login to continueOnly logged in users canattempt or see the solution.
