How to solve these missing number questions, and what logic should be applied to solve these type of questions?
First Answer :
Logic: The phrasing of the question (number instead of numbers) provides the clue that each pair of digits in a row forms a two-digit number.
So representing the grid as two-digit numbers we have:
73, 46, 19 (delta -27)
11, 9, 7 (delta -2)
52, 42, 32 (delta -10)
99, 50, 1 (delta -49)
67, 82, 97 (delta 15)
15, 48, 81 (delta 33)
Second Answer may be :
Answer : 7
Logic : In each row of the diagram, the central value equals the sum of the differences between the left hand pair of numbers and the right hand pair of numbers.
8,1 for the first one. The three pairs of digits on each line form arithmetic progressions.