Answer :

The answer could be either 67, 68, or 69 which one is it
it could be 67 68 or 69 - if there are 6 tens 10 10 10 10 10 10 10 10 10 10, and 7-9 ones 1 1 1 1 1 1 1 ... then that starts with 60 and is more than 6 ten blocks.

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