Do you have what it takes to find the missing number? This one's hard!

Today's riddle asks you to find the value of the missing number in the final box. Based on the boxes before it, you should be able to find a pattern and figure out how to solve for each one. After you find the pattern, apply it to the final box and replace the question mark with your answer. 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!

Answer Below