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What is the xth triangular number?
The formula for the nth triangular number is n(n+1)/2. Therefore, the fourth triangular number is equal to 4 x (4+1) / 2 = (4 x 5) / 2 = 10. The fiftieth triangular number is equal to 50 x (50+1) / 2 = (50 x 51) / 2 = 1275.
Is 4 a triangular number?
no No it is not. The first 5 triangular numbers are: 1, 3, 6, 10, 15
What numbers are a square triangular and prime?
A square number is any number multiplied by itself. 3 x 3 = 9 9 is a square number. A triangular number, like a set of bowling pins, follows the pattern 1 + 2 + 3 + 4 + 5 and so on. 1, 3, 6, 10, 15 are the first five triangular numbers. A prime number is a positive integer with two factors: one and the number itself.
Is 9 a triangular number?
yes it is!EDIT: No, it is not.
What is the 4 triangular number?
It is 1+2+3+4 = 10.
What are the names of the faces and the number of a triangular pyramid?
There are 4 triangular faces. They do not have names.
What is the xth triangular number?
The formula for the nth triangular number is n(n+1)/2. Therefore, the fourth triangular number is equal to 4 x (4+1) / 2 = (4 x 5) / 2 = 10. The fiftieth triangular number is equal to 50 x (50+1) / 2 = (50 x 51) / 2 = 1275.
What is the number of sides of a base for a triangular prism?
4
What do you notice about the number of sides on the base and the number of triangular faces?
Nothing much. A base of a cuboid has 4 sides and there are no triangular faces.
What numbers are a square triangular and prime?
A square number is any number multiplied by itself. 3 x 3 = 9 9 is a square number. A triangular number, like a set of bowling pins, follows the pattern 1 + 2 + 3 + 4 + 5 and so on. 1, 3, 6, 10, 15 are the first five triangular numbers. A prime number is a positive integer with two factors: one and the number itself.
Is 4 a triangular number?
no No it is not. The first 5 triangular numbers are: 1, 3, 6, 10, 15
Is 9 a triangular number?
yes it is!EDIT: No, it is not.
What is the 4 triangular number?
It is 1+2+3+4 = 10.
What are fours factors?
Answer: The factors of the number '4' are 1, 2, and 4.
Is 63 a Triangular Number?
Is 63 a triangular number I think it is a triangular number.
What is a number that is a triangular number and a triangular number?
013
What is the number of edges of the triangular pyramid?
The number of edges of the triangular pyramid is eight but the number of faces is five.* * * * *Even though put in italics, the answer is wrong. It would have been correct for a square or rectangle based pyramid but NOT a triangular pyramid. The latter has 6 edges (and 4 triangular faces).
