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# 10. Determine if a number is odd or even

# Description

The computation checks a number variable, and returns True if the number is even and False if it is odd

# Code

IF ROUND( ( NumVar-n / 2 ), 0 ) * 2 = NumVar-n

TRUE

ELSE

FALSE

END IF

Alternative:

IF ( NumVar-n / 2 ) = ROUND( ( NumVar-n / 2 ), 0 )

TRUE

ELSE

FALSE

END IF

# Explanation

Both computations return TRUE or FALSE, where TRUE = even number, and FALSE = odd number.

An odd number divided by two will produce a decimal. If we trim the decimal off with ROUND and multiply the integer portion by two, it will be less than the original number. For example: 5 / 2 = 2.5. 2 * 2 = 4. Even numbers, on the other hand, will always equal the original number when put through the same formula: 4 / 2 = 2. 2 * 2 = 4.

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