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Earn +20 ptsQ: What are the digital root to 15 with the numbers 1-9?
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Continue Learning about Math & Arithmetic
What 2 numbers add up to 38 but when multiplied equal 230?
The numbers are: (19+square root of 131) and (19-square root of 131)
What are digital roots of prime numbers?
To find the digital root of a number, repeatedly add its digits (called "digit sum") until you're left with a 1-digit number, 1 thru 9; e.g., 19 (a prime number) = 1+9 = 10 = 1+0 = 1, i.e., the digital root of 19 is 1 [sometimes expressed as 19=dr(1)]. Here's one more example, 89 (a prime) = 8+9 = 17 = 1+7 = dr(8).
What is the product of the prime numbers between 15 and 20?
The prime numbers between 15 and 20 are 17 and 19. To find the product of these two prime numbers, you simply multiply them together: 17 x 19 = 323. Therefore, the product of the prime numbers between 15 and 20 is 323.
Which of these numbers is composite 11 13 15 17 19?
It is 15
What is the median of the numbers 15 18 17 15 19 11 25?
15
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