Math, asked by ansh6127, 22 hours ago

5 th triangular number

Answers

Answered by amalkrishnav123

1

Answer:The Problem

Mary knows that the 5th triangular number is 15 because it needs 15 counters to make the triangle.

Step-by-step explanation:

Answered by shreyanshsingh644

0

Answer:

the 5th triangular number is 15 because it needs 15 counters to make the triangle.

Step-by-step explanation:

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