What is the mean of the first five triangular numbers?
Answers
Answered by
6
5 first triangular numbers:
1,3,6,10,15
as they make triangles
For eg.
6=●
● ●
● ● ●
Therefore, mean= Sum of the numbers ÷ no.of numbers
= (1+3+6+10+15) ÷ 5
= 35 ÷ 5
= 7
Answered by
1
the first five triangular number is 1,3,6,10,15
example6...
.
..
...
therefor the sum of the no/no of no
Similar questions