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egoroff_w [7]
2 years ago
7

What is the rule of this pattern 1, 21, 85, 341

Mathematics
2 answers:
Lilit [14]2 years ago
7 0

Multiply everything except the first starting number by 4 then add 1

weqwewe [10]2 years ago
4 0

5 x 4 +1 =21

21 x 4 +1 = 85

85 x 4 + 1 = 341

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3 years ago
a 5 sided solid has the numbers 1,2,3,4, and 5. what is the probability of rolling two five-sided solids and getting a sum of ei
kipiarov [429]
So this is going to be alot of writing to show my thinking but ill bold the answer.

1,1
1,2
1,3
1,4
1,5

2,1
2,2
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2,5

3,1
3,2
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5,1
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next ill mark all the ones that equal 4 or 8 when added together, with an x

1,1
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2,1
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x3,1
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3,3
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4,1
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x4,4
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5,2
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that is 6 (that equal 4 or 8) out of 25

so your ratio would be 6:19
6 0
3 years ago
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Independent one has nothing to with the other

7 0
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Can someone help me with this question
bogdanovich [222]
Because it is a fraction thats why. ok
7 0
3 years ago
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