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प्रश्न
State if the following is a prime number?
217
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उत्तर
A number between 100 and 200 is a prime number if it is not divisible by any prime number less than 15.
Similarly, a number between 200 and 300 is a prime number if it is not divisible by any prime number less than 20.
217 is a not prime number because it is divisible by 7.
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संबंधित प्रश्न
Test the divisibility of the following numbers by 5:
23590
Test the divisibility of the following numbers by 9:
3333
Test the divisibility of the following number by 10:
55555
Test the divisibility of the following number by 11:
83721
In the following number, replace * by the smallest number to make it divisible by 3:
8*711
In the following number, replace * by the smallest number to make it divisible by 11:
467*91
Give an example of a number which is divisible by 4 but not by 8.
Write (T) for true and (F) for false against the following statement:
If a number is divisible by 4, it must be divisible by 8.
Which of the following numbers is divisible by 4?
Why are divisibility tests useful?
