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  1. 1/11 is equal to
    1. 0.009
    2. 0.09
    3. 0.09
    4. 0.009
Correct Option: C

216 – 1 = (28)2–1
= (28+1) (28–1)
= (256 + 1) (256 – 1)
= 257 × 255 which is exactly divisible by 17.


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