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Earn +20 ptsQ: Which number between 20 and 40 is both a triangular number and a square number 36 or 25 or 21 or 35?
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What number between 100 and 10000 that is both triangular and square?
1225
Is 1 a squared and triangular number?
Yes. 1 is both square and triangular.
Which number between 0 to 100 is both a triangular number and a squared number?
64
What makes the number 36 a special number?
36 is the smallest non-trivial number. It is both square and triangular.
What numbers are both square numbers and triangular numbers?
The only square number that is also a triangular number is 1. This is because square numbers are of the form n^2, while triangular numbers are of the form (n*(n+1))/2. When setting these two equations equal to each other and solving for n, we find that n=1 is the only integer solution. Therefore, 1 is the only number that is both a square number and a triangular number.
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