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What is the seventh triangular number?

Anonymous

∙ 9y ago

Updated: 4/28/2022

There is a very simple formula. The nth triangular number, T(n) = n*(n+1)/2

Here n = 7, so T(7) = 7*8/2 = 28.

Wiki User

∙ 9y ago

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Continue Learning about Other Math

If the eighth triangular number is 36 what is the seventh trianguler number?

28"21" but to be extra smart the answer is "The seventh triangular number is twenty one."

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36 is a triangular number, Square number and also a Consecutive number.

When you add two triangular numbers why do they equal to a square number?

They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.

Is one a triangular number?

Yes, 1 is a triangular number.

Related Questions

If the eighth triangular number is 36 what is the seventh trianguler number?

28"21" but to be extra smart the answer is "The seventh triangular number is twenty one."

Is 63 a Triangular Number?

Is 63 a triangular number I think it is a triangular number.

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36 is a triangular number, Square number and also a Consecutive number.

When you add two triangular numbers why do they equal to a square number?

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