Understand natural numbers: Step 1: Understand what a natural number is.Natural numbers are the set of positive integers starting from 1 (1,2,3,4,…). They do not include fractions or decimals.
Evaluate 513: Step 2: Evaluate 513. 13 divided by 5 equals 2.6, which is a decimal, not an integer.
Determine 2.6 as natural number: Step 3: Determine if 2.6 is a natural number.Since 2.6 is not a whole number, it cannot be a natural number.