easy way of finding prime numbers in exams
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To prove whether a number is a prime number, first try dividing it by 2, and see if you get a whole number. If you do, it can't be a prime number. If you don't get a whole number, next try dividing it by prime numbers: 3, 5, 7, 11 (9 is divisible by 3) and so on, always dividing by a prime number (see table below)
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The best way to find if a number is prime or not is that you divide that number with 3 and 7 if it is not divisible by either of them then it's a prime.
Step-by-step explanation:
MARK BRAINLIEST
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