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Earn +20 ptsQ: Which number is triangular and square?
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Is 144 a triangular number?
144 is a square number, not a triangular number.
What number under 50 is a square and triangular number?
1, the first triangular number, is also a square.
Is 169 a square number or a triangular number?
It is 13 squared, but it's not a triangular number
How do you find out if a number is a Triangular number?
A number, t, is a triangular number if (1 + 8t) is a square of an odd number.
What are the one square number and triangular number?
69
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