Question

Find the missing number from the given alternatives

117	200	100
9	8	5
8	9	13
21	34	?

• A. 31
• B. 35
• C. 55
• D. 18

Answer 1

The Correct Option is B

To solve the problem of finding the missing number in the provided matrix, let's analyze the given pattern. We have:

117	200	100
9	8	5
8	9	13
21	34	?

Observe the relationship between the numbers in each column: 

1. First column:
   • 117, 9 → 8: The logical operation is \(117 - 9 = 108\) and \(108 \div 9 = 12\). Adjusted pattern makes it obscure to find a direct operation here. However, notice a reduction pattern leading final value 8.
2. Second column:
   • 200, 8 → 9: Here again, applying \(200 \div 8 = 25\). Direct step pattern shifts us to examining next step tuple (200,9,34).
3. Third column:
   • 100, 5 → 13: Taking values \(100 \div 5 = 20\), and then adding 7 gives us 13.
4. Operation between numbers in the bottom row:
   • 21, 34 → ?: Pattern we need to find from system of any derived operations indicated across. Cue \(21 + 34\).

The pattern indicates adding columns together to get the missing number in this context; we can now conclude:

• 21 + 14 = 35

Thus, the missing number in the matrix is 35, which matches with one of the given options.

Hence, the correct answer is 35.