Missing Letter Puzzles Questions with Answers

7. What goes at the bottom of the last triangle?
  What is the next number?
Answer
Ans = N.
The number in the centre of each triangle equals the sum of the squares of the numerical values around each triangle.
8. Complete the puzzle?
  What is the next number?
Answer
Ans = Y.
In rows, add the numerical values of the left and centre letters to give the value of the right hand letter.
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