What are triangular numbers?
Posted: Wed Jul 13, 2022 8:03 pm
a) The numbers whose dot pattern can be arranged in triangles
b) The numbers which form a triangle on adding
c) The numbers which have three digits
d) The numbers which do not give perfect squares on adding
b) The numbers which form a triangle on adding
c) The numbers which have three digits
d) The numbers which do not give perfect squares on adding