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Earn +20 ptsQ: What is the formula to find out a triangular number?
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How do you find out if a number is a Triangular number?
A number, t, is a triangular number if (1 + 8t) is a square of an odd number.
What is the 24th triangular number?
The 24th triangular number is 300. This was found using the formula: n(n+1) divided by 2
How do you find the 20Th triangular number?
The 20th triangular number is 20*21/2 = 210
What is the surface area of one side of a triangular prism?
It depends on the size of the triangular prism, but depending on the side of the prism you use the triangle area formula to find it or the rectangle area formula to find it.
How do you work out the 50th triangular number?
Oh, dude, it's like super simple. The 50th triangular number is just the sum of all the numbers from 1 to 50. So, you can use the formula n(n+1)/2, where n is 50 in this case. Plug it in, do the math, and boom, you've got your answer. It's like math, but with a little extra pizzazz.
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