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A Collection of Dimes Is Arranged in a Triangular Array $10.50\$ 10.50

Question 133

Multiple Choice

A collection of dimes is arranged in a triangular array, with 14 coins in the base row, 13 in the next, 12 in the next, and so forth. Find the value of the collection.


A) $10.50\$ 10.50
B) $1.05\$ 1.05
C) $5.25\$ 5.25
D) $21.00\$ 21.00

Correct Answer:

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