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How did you find that 71 is a prime number?
Its square root is less than 9, but it is not evenly divisible by any number less than 9, other than 1, so it is a prime number
What is the number described by all the clues belowthe number is not less than 20 the number is not greater than 40 the number is not divisible by 2 3 or 7 the number is not a prime number?
25 is the number not less than 20, not greater than 40, not divisible by 2 3 or 7, and not a prime number.
What is the greatest prime number less than 26?
25 is divisible by 5 24 is divisible by 2,3,4,6,8,12 So the answer is 23
Can you find a number less than 150 that is divisible by 4 different prime numbers?
85
Number less than 50 not a prime number not divisible by 2 3 4 5 6?
49 is not prime, as it's 7 * 7.
A set of prime numbers less than 18?
Prime numbers are such number which are only divisible by 1 and by itself only..{1,2,3,5,7,11,13,17}
Why is 10 composite number?
Because it is divisible by the prime number 2, which is less than 10.
Can a number less than a number be divisible by it?
No.
Is 75 a prime number?
No 75 is not a prime number because it is divisible by numbers other than the number 1 and itself. No 75 is not a prime number because it is divisible by numbers other than the number 1 and itself. No 75 is not a prime number because it is divisible by numbers other than the number 1 and itself. No 75 is not a prime number because it is divisible by numbers other than the number 1 and itself.75 is not a prime number because it has more than two factors and so therefore it is a composite number.
How many primes less than 1000 are divisible by 7?
Just 7. Any other number divisible by 7 isn't prime.
How do you know that any remaining number less than 100 must be prime?
If it is divisible by 2, 3, 5 or 7 then it is not prime. Otherwise it is.
If a two-digit number less than 40 is divisible by only one prime number The sum and the difference between the digits is also a prime number thus what is the number?
16
