Any mathematical way to solve this question other than counting.

1.	Any mathematical way to solve this question other than counting.
Answer» Yeas there is an EASIER formula. You can use the formula x{1+2+3+....+n+(n+1)} = x[(n+1)+(n+2)]/2 Where n is the NUMBER of vertical lines forming a TRIANGLE and x being no of horizontal lines forming a triangle. I can DM you a LINK for similiar question if you want.

Answer»

Yeas there is an EASIER formula. You can use the formula

x*{1+2+3+....+n+(n+1)} = x*[(n+1)+(n+2)]/2

Where n is the NUMBER of vertical lines forming a TRIANGLE and x being no of horizontal lines forming a triangle. I can DM you a LINK for similiar question if you want.

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Any mathematical way to solve this question other than counting.

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