I am trying to use round function but its gives different results. For ex: Round of 54.5 gives 54, while 163.5 gives 164. also it happening with many numbers.

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The Round function is mathematically correct. Let me explain the math behind it:

When you round a number **if itâ€™s fractional part is 0.5 the number is rounded to the nearest even integer**.

For example:

Round 0.5 => 0

Round 1.5 => 2

Round 2.5 => 2

Round 3.5 => 4

Here the number 3.5 has 2 even integers near it, 2 & 4. Out of which 4 is the nearest therefore it is returned.

Compare these examples with your inputs and you would find the logic works the same.