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Earn +20 ptsQ: What are the next four triangular numbers after 15?
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What is the patten for triangular numbers?
3, 6, 10, 15
Is 21 a triangular number?
Yes, the number 21 is indeed a triangular number. Other triangular numbers are 6,10, and 15.
Is 4 a triangular number?
no No it is not. The first 5 triangular numbers are: 1, 3, 6, 10, 15
Is it possible to have a prime and triangular number result when you roll 4 dice?
First few triangular numbers: 0, 1, 3, 6, 10, 15, 21, 28 Numbers that can be thrown with four dice: 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 Which of these numbers that are triangular: 6, 10, 15, 21 None of these is prime.
What triangular numbers are equal to the sum of two other triangular numbers?
Thre are infinitely many solutions. The smalest set with two different triangular number adding to another is 6 + 15 = 21
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