Answers

2014-05-07T20:04:21+08:00
The numbers between 41 and 71 are {42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 57, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70}
Let x be the integer.
Test all numbers and assume that {48, 56, 64} are the exact numbers which are equivalent to 8x.
8x = 48
x = 48/8
x = 6;
8x = 56
x = 56/8
x = 7;
8x = 64
x = 64/8
x = 8;
Therefore there are 3 exact numbers that are equivalent to 8x
0
2014-05-07T22:00:59+08:00
48,56 and 64 ..........................!

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