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What is the formula for triangular numbers?
The Nth triangular number is calculated by: N(N + 1) -------- 2 Hope this is useful!
121 prime or composite?
The number 121 is a composite number, since it is divisible by 11.
Why is 121 not prime?
121 is not a prime number. It is divisible by 11.
What solid figure has the least number of faces a triangular prism or triangular pyramid?
triangular pyramid
The 8th triangular number is 36 what is the 7th triangular number?
The formula for the nth triangular number is n(n+1)/2. If the 8th triangular number is 36, then we can set up the equation 8(8+1)/2 = 36. Solving for n, we get n = 7. Therefore, the 7th triangular number is 7(7+1)/2 = 28.
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
Is 100 a triangular number?
no it is not a triangular number
Is 150 a triangular number?
Decimal triangular number it is
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 36 a triangular number?
36 is a triangular number, Square number and also a Consecutive number.
Is the number 121 and Odd number?
121 is an odd number and it is also a square number because 11*11 = 121
Is 121 an even number?
121 is not an even number.
What type of number is 121?
121 is a square number
Is 33 a triangular number?
No, 33 is not a triangular number.
Is 172 a triangular number?
No, 172 is not a triangular number.
Is 324 a triangular number?
No, 324 is not a triangular number!
