Question

The numbers below are arranged according to a
certain rule. Once you've worked out the rule,
fill in the missing number. The number seven in
the final circle is not a typographical error.
TOT
F
HERE
..
E
G
File​

Answer 1

Given :  Number arrangement  and a missing numbe

To find :  Missing number

Solution:

72 + 99 = 27

=> 7 + 2 + 9 + 9 = 27

27 + 45 = 18

=> 2 + 7 + 4 + 5 = 18

18 + 39 = 21

=> 1 + 8 + 3 + 9 = 21

21 + 36  = ?

=> 2 + 1 + 3 + 6  = 12

28 + 12   = 13

=> 2 + 8 + 1 + 2 = 13

13 + 21 = 7

=> 1 + 3 + 2 + 1 = 7

12 will come in place of Question mark

Logic is that a number is sum of digits of numbers pointing on that number

Learn more:

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