Question

what are the first four triangular numbers

CHAPTER SQUARES AND SQUARE ROOTS, please tell

Answer 1

Step-by-step explanation:

Life is like riding a bicycle. To keep your balance, you must keep moving.

Answer 2

Answer:

This is the Triangular Number Sequence: 1, 3, 6, 10, 15, 21, 28, 36, 45, ... This sequence comes from a pattern of dots that form a triangle: By adding another row of dots and counting all the dots we can.

Easy chapter hai ek baar acche se padhna kuch samajh naa aaye humse puch lena.

Hope it helps