Question : 625 + 626 + 627 + 628 is divisible by:
Option 1: 256
Option 2: 254
Option 3: 255
Option 4: 259
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Correct Answer: 259
Solution : 6 25 + 6 26 + 6 27 + 6 28 = 6 25 (1 + 6 + 6 2 + 6 3 ) = 6 25 (7 + 36 + 216) = 6 25 (259) It is divisible by 259. Hence, the correct answer is 259.
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