1.If a1,a2,a3,…,an,…a_1, a_2, a_3, \ldots, a_n, \ldotsa1,a2,a3,…,an,… are in A.P. such that a4−a7+a10=ma_4 - a_7 + a_{10} = ma4−a7+a10=m, then the sum of the first 131313 terms of this A.P. is:a.15m15m15mb.10m10m10mc.12m12m12md.13m13m13mLogin to continueOnly logged in users canattempt or see the solution.
