Today's riddle asks you to complete the series of numbers by filling in the last missing number. You can find this number by figuring out the pattern between the numbers before it. It's there, oyu just have to give it a little bit of extra effort and thinking. Give it your best shot! If you think you know the answer, take a guess and check to see if it's right. Afterwards, share this with all of your friends to pass it on and see if they can find it too!