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prime number

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    if q is a whole number and q is a prime, and if 20q is divisible by 6, then q could be

    A. 2 B. 3 C. 4 D. 5 E. 6 We have 3 conditions that all must be met: Whole number Prime Number 20 * number is divisible by 6 The are all whole numbers One A, B, and D are prime, so we eliminate C and E 20(2) = 40 which is not divisible by 6 - Eliminate Answer A 20(5) = 100 which is not...
  2. math_celebrity

    How many of the numbers between 20 and 40 are prime numbers?

    How many of the numbers between 20 and 40 are prime numbers? A) 3 B) 4 C) 5 D) 6 E) 7 Recall that a prime number is a number that only has itself and 1 as a divisor. Remove all the evens since the are divisible by 2 (20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40) Remove all the remaining...
  3. math_celebrity

    A = himpunan bilangan prima yang kurang dari 20. Banyaknya anggota himpunan A adalah …

    A = himpunan bilangan prima yang kurang dari 20. Banyaknya anggota himpunan A adalah … Dengan menggunakan kalkulator nombor perdana, kami mendapat: A = {2, 3, 5, 7, 11, 13, 17, 19}
  4. math_celebrity

    A natural number greater than 1 has only itself and 1 as factors is called

    A natural number greater than 1 has only itself and 1 as factors is called a prime number.
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