The square below is missing a number:

Fill in the number

You have four options:

  • 32

  • 4

  • 16

  • 22

Please explain your answer.


Something to do with addition.

  • $\begingroup$ Did you mean to spoiler the hint? $\endgroup$
    – jpmc26
    Oct 24, 2018 at 1:46

1 Answer 1


The following grid

which uses 16 as the missing number

enter image description here

is magic as adding the letter count spelling the numbers is 21 horizontally, vertically, diagonally.

  • $\begingroup$ Great thinking as always @Tom. $\endgroup$
    – DrD
    Oct 23, 2018 at 17:41

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