JEE Main 20207 Jan, Morning shiftMathematicsMediumBinomial Theorem and Its Simple Applications131× since 2002
The greatest positive integer k, for which 49^k + 1 is a factor of the sum
49¹²⁵ + 49¹²⁴ + ..... + 49² + 49 + 1, is:
JEE Main 2020 · 7 Jan, Morning shift · Q2892