Problem

9 Which are the numbers between 81 and 111 that are divisible by 2 ?

Answer

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Answer

2⋅i, i∈{41,42,...,55}

Steps

Step 1 ：a=⌈812⌉=41

Step 2 ：b=⌊1112⌋=55

Step 3 ：2⋅i, i∈{41,42,...,55}

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