Here is the answer to the puzzle from the reel, with the working explained below.

Question 1

Where is 3816 in the grid?

Correct answer: row 5, column 2

Count rows from the top and columns from the left, starting at 1. The number 3816 appears once, at row 5, column 2. The highlighted cell below shows its exact position.

The marked solution

1817781739163906
6816391638125816
3216881635163416
3856385638263810
3846381630167816
3814581937163818
3896331658123316
3306381731141816
3856131638123896
5816381138263016