36
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36 is a triangular number. The formula for the nth triangular number is, n(n + 1)/2. So, 36 is the 8th triangular number : 8 x 9/2 = 36
Decimal triangular number it is
36 is a triangular number, Square number and also a Consecutive 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.
Yes, 1 is a triangular number.