Aspire Faculty ID #16409 · Topic: NIMCET 2010 · Just now
NIMCET 2010

In the following square, numbers have been filled according to some rule. One space has been left blank. Find the correct number out of those given below for the blank space.


Solution

Look at the pattern column-wise:

Column 1:

Top → Middle → Bottom
56 → 12 → 44

Check:
$56 - 12 = 44$ ✔

Column 3:

Top → Middle → Bottom
78 → 30 → 48

Check:
$78 - 30 = 48$ ✔

So the rule is:

Bottom = Top − Middle

Now apply the pattern to Column 2:

Top = 65
Bottom = 14

So Middle should be:
$65 - ? = 14$
$? = 65 - 14 = 51$

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