Question

Which is the missing number: 9876, 6447, 2527, x?

Answer 1

This question presents an interesting pattern.

The rule/pattern to be followed here is:

Left side of the number looking at the previous one: (First digit x Third digit + 1)

Right side: (Second digit x Fourth digit -1)

For example, let us take 6447. Let us look at it's previous number, 9876.

Now, $9\times 7+1=64$ and

$8\times 6-1=47$

that is how we got 6447

Again, for the third number, 2527, let us look at it's previous number, 6447

Now, $6\times 4+1=25$

and $4\times 7-1=27$

that is how we got 2527

Going by the same logic, the missing number should be 534.

This we got by applying the rule of the pattern as:

$(2\times 2)+1=5$

and

$(5\times 7)-1=34$

Thus, we got 534.