Question:

The picture shows some letters that are arranged in a pattern

Use the key to find the missing letter?

Bit Logical,but It’s leaving adults scratching their heads.

Answer:(please provide your opinion in comments below)

Bit Tricky logic,

Here we need to Add up all values of a diagonal and then subtract all values of other diagonal from it.

So ,Add S,B,G which form a diagonal and subtract values of B,P which is part of other diagonal

S+B+G-B-P = 23+6+11-6-20= 14

So value of J is 14