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Smaller of two triangular numbers whose sum and difference are also triangular numbers?
The answer would be 15 and 21. The triangular numbers are 1,3,6,10,15,21,28,36,45,55,66,78. 15 plus 21 is 36 which is on the list. 21 minus 15 is 6 and that is on the list as well.
Is 25 a triangular number?
No - but it is a square number. 1,3,6,10,15,21 & 28 are all triangular numbers. 1,4,9,16,25 & 36 are all square numbers.
Is 29 a triangular number?
no- 29 is not triangular. The triangular numbers closest to 29 are 28 and 36.
List of triangular numbers?
1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 104, ...
What are all the triangular numbers 1-100?
101
Smaller of two triangular numbers whose sum and difference are also triangular numbers?
The answer would be 15 and 21. The triangular numbers are 1,3,6,10,15,21,28,36,45,55,66,78. 15 plus 21 is 36 which is on the list. 21 minus 15 is 6 and that is on the list as well.
Is 25 a triangular number?
No - but it is a square number. 1,3,6,10,15,21 & 28 are all triangular numbers. 1,4,9,16,25 & 36 are all square numbers.
Is 39 a triangular number?
No, 39 is not a triangular number. The closet triangular numbers are 36 and 45.
List all the triangeler numbers from one to a hundred?
The triangular numbers between 1 and 100 are as follows: 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91.
Is 29 a triangular number?
no- 29 is not triangular. The triangular numbers closest to 29 are 28 and 36.
What are the five triangular numbers that follow 21?
The five triangular numbers that follow 21 are 28, 36, 45, 55, and 66.
What is the two triangular consecutive numbers of 81?
36 and 45
List of triangular numbers?
1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 104, ...
What are all the triangular numbers 1-100?
101
What are the first two numbers which are both triangular an square?
1 and 36
How many triangular numbers are also square numbers?
There are an many triangular numbers that are also square numbers. Simply put, the sum of two consecutive triangular number equals a square number. Examples include 1 and 36.
What triangular numbers are greater than 20?
Triangular numbers are generated by the formula ( T_n = \frac{n(n+1)}{2} ). The triangular numbers greater than 20 are 21, 28, 36, 45, and so on. Specifically, the first few triangular numbers greater than 20 are ( T_6 = 21 ), ( T_7 = 28 ), ( T_8 = 36 ), and ( T_9 = 45 ).
