What’s the missing number : 9876, 6447, 2527, x.?

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.

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)