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They are the triangular numbers.

Un = 1 + 2 + 3 + 4 + ... + n = n*(n+1)/2 for all integers n > 0

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Q: What is the rule of 1 3 6 10?
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What is the rule for 1 3 6 10 15?

it adds one more each time. 1+2=3 3+3=6 6+4=10 10+5=15 the next one would be 15+6=21------------------------------------------------With U{n} = (7n⁵ - 105n⁴ + 595n³ - 1555n² + 1938n - 840)/40U{1, ..., 5} = {1, 3, 6, 10, 15}U{6} = 42However, I suspect the rule your teacher wants is that it is the triangular numbers given by U{n} = ½n(n + 1)


What does 6 over 10 divided by 1 over 5?

(6/10) / (1/5) = (6/10) * (5/1) = 30/10 = 3(6/10) / (1/5) = (6/10) * (5/1) = 30/10 = 3(6/10) / (1/5) = (6/10) * (5/1) = 30/10 = 3(6/10) / (1/5) = (6/10) * (5/1) = 30/10 = 3


What rule is in this pattern 0 1 3 6 10?

Starting with the zero, you add numbers sequentially. So, you add 1, then 2, then 3 then 4 etc.


How do you write the decimal 86.93 in expanded form?

8*10 + 6*1 + 9*0.1 + 3*0.018*10 + 6*1 + 9*0.1 + 3*0.018*10 + 6*1 + 9*0.1 + 3*0.018*10 + 6*1 + 9*0.1 + 3*0.01


What is 1over 10 divided by 6 2over 3?

1/10 divided by 6 2/3 = 3/200= 1/10÷62/3=1/10÷20/3=1/10 *3/20= 3/200


What Is the Divisibility Rule of 1?

Every Number is a Multiple of 1 e.g., 5÷1=5, 3÷1=3, and 6÷1=6.


How many million in a trillion?

The tri- prefix implies a power of 3.Depending upon where you are:In those countries that use the long scale (based on powers of a million), like Europe:1 trillion = (10^6)^3 → there are 1 trillion ÷ 1 million = (10^6)3 ÷ (10^6)^1 = (10^6)^(3-1) = (10^6)^2 = 1 billion→ there are 1 billion millions in 1 trillionIn those countries that use the short scale (based on powers of a thousand plus one), like USA:1 trillion = (10^3)^(3+1) = (10^3)^4 → there are 1 trillion ÷ 1 million = (10^3)^4 ÷ (10^6)^1 = (10^6)^2 ÷ (10^1)^6 = 10^6 = 1 million→ there are 1 million millions in 1 trillion.


What is 1 and 3 thenths plus 3 thenths?

1 and 3/10 + 3/10 = 1 and 6/10 or 1 and 3/5.


Write three fractions using 10 as the denominator whose sum is 1?

1/10 , 3/10 , 6/10 . Their sum is (1+3+6)/10 = 10/10 = 1


What is the pattern rule for 1-3-6-10-15?

21-28-36-45-55-66-74-87-101


What is the pattern number for 6 3 4 8 3 10 5 3 1?

6 3 48 3 10 4 3 1 ? 5 6


What is 3-6 seconds rule?

3-6 seconds rule = -3