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A Collection of Dimes Is Arranged in a Triangular Array

Question 38

Multiple Choice

A collection of dimes is arranged in a triangular array, with 15 coins in the base row, 14 in the next, 13 in the next, and so forth. Find the value of the collection.


A) $12.00
B) $6.00
C) $1.20
D) $24.00

Correct Answer:

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