0,1,3,6,10,15,21,28,36,45,56,68,81,95,110,126,143,161,180,200. That's all the triangular numbers up to 200! I hope that's helped anyone with any thing.
1,4,9,16,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400 All the square numbers up to 20!
1,3,6,10,15,21,28,36,45,47,66,78,91,95
45
1, 3, 6, 10, 15, 21, 28, 36
There are exactly 200 of them.
1,4,9,16,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400 All the square numbers up to 20!
1,3,6,10,15,21,28,36,45,47,66,78,91,95
1'3'10 etc;
45
1, 3, 6, 10, 15, 21, 28, 36
Just count up all the even numbers which will all be divisible by 2
Numbers up to 200 divisible by both 2 and 3 = numbers to 200 divisible by 2*3 = 6 which is int(200/6) = int(33.33) = 33
There are exactly 200 of them.
There are 45 prime numbers that are less than 200 (including '1'.)
28 and 10 are both triangular numbers and add up to 38
Triangular numbers are the sum of the natural numbers up to a certain point. The triangular numbers less than 60 are 1, 3, 6, 10, 15, 21, 28, 36, 45, and 55. These numbers can be calculated using the formula ( T_n = \frac{n(n + 1)}{2} ), where ( n ) is a positive integer. The largest triangular number less than 60 is 55, which corresponds to ( n = 10 ).
1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78 and 91.