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Question

There are 900 stones in a box. Among them, there are 243 red, 468 yellow, and a few blue stones. How many blue stones are there?

A
179
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B
189
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C
657
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D
199
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Solution

The correct option is B 189
Total number of stones = 900
Number of red stones = 243
Number of yellow and blue stones = 900243=657


Number of yellow stones = 468
Number of blue stones = 657468=189


Hence, there are 189 blue stones.




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