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Ok, last one I promise.

Ok, last one I promise.-example-1

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All of them, so 10.
Check the key to see how to read it. 1 | 7 would be 17. So the number of pairs in each store are:
17, 18, 20, 25, 28, 34, 34 37, 38, and 40 (all below 60)
User Sandeep Mohanty
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