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Earn +20 ptsQ: What is the 12th triangle number?
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What are the third and sixth entries in the row 12 of Pascals triangle?
To find a specific number in Pascal's triangle, use the formula n!/r!(n-r)! Where n is the row number (starting at 0) and r is the row element (starting at 0) So for the 3rd entry of the 12th row we would put in the following numbers: 11!/2!(11-2)! which equals 55 Do the same for the 6th entry of the 12th row and you get 462.
Triangle number of 28?
28 is a triangle number. The 28th triangle number is 406.
What is the third triangle number?
The third triangle number is 6.
What is the fifth triangle number?
The fifth triangle number, known as T5 is 15.
Why is 10 called a triangular number?
A triangular number or triangle number counts the objects that can form an equilateral triangle. 10 objects can be formed into an equilateral triangle.
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