MathsJEE Main 28 Jan 2026, Shift 1·Q17·MCQ·Easy–moderate

Sequences & Series · Arithmetic progression

The common difference of the A.P.:

a_1, a_2, \ldots, a_m

is 13 more than the common difference of the A.P.:

b_1, b_2, \ldots, b_n

. If

b_{31} = -277

b_{43} = -385

and

a_{78} = 327

, then

a_1

is equal to

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