If n is a natural number then 9 two n - 4 two n is always divisible by a. 5 b. 13 c. both 5 and 13 d. none of these
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9 TWO MEANS 18 AND 4 TWO MEANS 8 THAT MEANS 18+8=26, 26 IS DIVISIBLE BY 13 SO THE ANS IS B 13
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