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13 is a Prime number because it has only two factors which are itself and one.
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What goes into 13?
The only numbers that divide 13 evenly (the factors of 13) are 1 and 13.This makes 13 a prime number.
What are the next two numbers in this pattern 6 13 27 55?
6,13,27,55, 111, 223 ... Here is why: 6 + (1x7) makes 13 13 + (2x7) makes 27 27 + (4x7) makes 55 55 + (8x7) makes 111 111 + (16x7) makes 223 Or this way explains the answer using powers of 2: (7x20)-1 makes 6 (7x21)-1 makes 13 (7x22)-1 makes 27 (7x23)-1 makes 55 (7x24)-1 makes 111 (7x25)-1 makes 223
How do you know when 2 events are complementary?
which two of these three events are complementary? a. The probablity that a student makes more than 13 mistakes is .32 B. The probability that a student makes 3 or more mistakes is .56 C. The probability that a student makes at most 13 mistakes is .68
Find two factors of 42 with a sum of 13?
Hint: review your multiplication table-- does not 42 ring a bell? What times what makes 42? Is their sum 13? ?? bingo!!
What is the sum of the integers between 1 and 300 that are 11 or 13?
The question makes no sense.. you can easily find the sum of integers between 1 and 300 but what does 11 or 13 have to do with it.
