There are two rows of numbers in the grid below. The upper row is complete, and in the lower row one number is missing. Find the number that keeps the same pattern as the upper row.
Show Hint
Look at how the first and third numbers combine to give the middle number.
We can also solve this by testing each option directly against the relationship shown in the completed upper row, instead of deriving a formula first.
Option A (211): Dividing 211 by 15 does not give a clean link to 10 or half of 10, so this number does not follow any simple pattern with 15 and 10.
Option B (75): Since 10 divided by 2 is 5, and 15 times 5 is exactly 75, this number reproduces the same first times half of third link the upper row shows between 17, 12 and 102.
Option C (125): 125 divided by 15 is not a whole multiple of 5, so it breaks the pattern.
Option D (117): 117 divided by 15 does not give 5 either, so it also fails to match the rule.
Only 75 keeps the row-wise relationship consistent with the pattern set by the top row.
Let's summarize:
In grid or matrix reasoning puzzles, find the rule from the complete row first, then test it directly against the answer choices.
