The given pattern is 9876, 6447, 2527, x
We have to find the missing number 'x' in the given pattern.
We will use hit and trial method to get this missing number.
Let us observe the given pattern.
I have assumed the unknown number as -1884
that is the sequence becomes as
9876, 6447, 2527, -1884
Consider the difference of first term from second term that is 6447 from 9876.
6447 - 9876 = -3429
Consider the difference of second term from third term that is 2527 from 6447.
2527-6447= -3920
Consider the difference of third term from fourth term that is 2527 from -1884
= -1884-2527
= -4411
By computing the differences, we get
-3429 , -3920, -4411
Now, the difference of -3429 from -3920
= -3920-(-3429)
= - 491
Now, the difference of -3920 from -4411
= -4411-(-3920)
= - 491
Which is same.
Therefore, the missing number 'x' is -1884.