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6 Cards in this Set
- Front
- Back
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how do you find the sum of consecutive integers from 60 to 100 inclusive?
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1. find middle number. 60+100=160/2=80
2. count number of terms 100-60=40+1=41 3. combine 41x80 |
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find the average term in a consecutive set from 40 to 100 inclusive?
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sum of all integers/# of integers = average.
40+100=140/2= 70 |
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average of an odd number of average of an odd number of consecutive integers will always be an integer. avg of an even #of integers will never be an integer. consecutive integers will always be an? avg of an even #of integers will never be an?n
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Integer.
never be an integer |
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special products rule says what?
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the product of consectutive integers will always be divisible by the number of terms in the set.
2*3*4=24 is divisible by the number of terms which is 3 terms. True all even and odds. |
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specials sums rule states that?
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ONLY applies to odd number of consecutive terms. The sum of the odd set is a multiple of the number of odd terms in the set.
ODD ONLY |
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list the primes to 42
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2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41
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