数学智力考验

9?

按规律是9

Congratulations @steemdizhu! You have completed the following achievement on the Steem blockchain and have been rewarded with new badge(s) :

You made more than 50 upvotes. Your next target is to reach 100 upvotes.

_{Click here to view your Board of Honor
If you no longer want to receive notifications, reply to this comment with the word STOP}

Do not miss the last post from @steemitboard:

SteemitBoard notifications improved

Support SteemitBoard's project! Vote for its witness and get one more award!