Question

What is next triangular number? 36,45,55..............​

Answer 1

Answer:

66

Step-by-step explanation:

increase every step by 1

Answer 2

First it was 36 so they added 9 to it then 45 to 55 so we added 10 then we should add 11 66 then we should add 12 so 78 then we should add 13 so 91 so 66,78,91