1, 3, 6, 10, 15, 21, 28, 36, 45, 55
Ordinary numbers
The average of the first ten prime numbers is 12.9.
3.141592653
The first ten positive numbers total 55.
The first ten happy numbers are: 1, 7, 10, 13, 19, 23, 28, 31, 32, 44
2520 is the smallest multiple of of first ten natural numbers.
38.5
100
thousands
The numbers 4, 6, 8, 9, 10, 12, 14, 15, 16, 18 are the first ten composite numbers.
5
6
Triangular number: An integer of the form (1/2)n(n + 1), where n is a positive integer.12 is not a triangular number. The first few triangular numbers are 1, 3, 6, 10, and 15.
An abacus.
It is 110.
The first ten prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29 Hope it helps
The first ten prime numbers are 2,3,5,7,11,13,17,19,23 and 29.