1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91
0,1,3,6,10,15,21,28,36,45,55,66,78,91
101
The triangular numbers between 1 and 100 are: 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91.
No, the number 100 is not a triangular number. Triangular numbers are formed by the formula ( T_n = \frac{n(n + 1)}{2} ), where ( n ) is a positive integer. The closest triangular numbers to 100 are 91 (for ( n = 13 )) and 105 (for ( n = 14 )). Since 100 does not match any triangular number in this sequence, it is not triangular.
33
Square numbers less than 100 are: 1, 4, 9, 16, 25, 36, 49, 64, 81, and 100. Triangular numbers less than 100 are: 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, and 91. Notably, 36 is both a square and a triangular number.
because since numbers from 1-100 are smaller then 100-200 making more numbers in 1-100...ex. 78+13=91..while 5152+100=5252! hehe i am smart!
Triangular numbers are generated by the formula ( T_n = \frac{n(n + 1)}{2} ). The triangular numbers between 50 and 100 are 55, 66, 78, and 91. These correspond to ( T_{10} ) (55), ( T_{11} ) (66), ( T_{12} ) (78), and ( T_{13} ) (91).
-99
The two triangular numbers that add up to 100 are 36 and 64. The triangular number sequence is generated by the formula ( T_n = \frac{n(n+1)}{2} ). For ( n = 8 ), ( T_8 = 36 ), and for ( n = 11 ), ( T_{11} = 64 ). Together, they satisfy the equation ( 36 + 64 = 100 ).
Six.
47 is not a triangular number. Triangular numbers less than 100 are 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, and 91.