divisibility

$6^{25}+6^{26}+6^{27}+6^{28}$ is divisible by: SSC CGL 14 July 2023 Tier 1 Shift 1 A. 256 B. 254 C. 255 D. 259 Solution: The correct answer is 259. Explanation: The expression $6^{25}+6^{26}+6^{27}+6^{28}$ can be factored as follows: \[ 6^{25} (1 + 6 + 6^2 … Read more