The series is decreasing and appears to be based on a pattern of squares.

400 is 20^2,
324 is 18^2,
256 is 16^2,
196 is 14^2,
144 is 12^2.

The difference between the numbers being squared is 2.

So the next number in the series should be 10^2, which is 100.

Question

The series is decreasing and appears to be based on a pattern of squares.

400 is 20^2, 
324 is 18^2, 
256 is 16^2, 
196 is 14^2, 
144 is 12^2.

The difference between the numbers being squared is 2.

So the next number in the series should be 10^2, which is 100.

Knowee AI · Accepted Answer

The series is decreasing and appears to be based on a pattern of squares.

400 is 20^2, 
324 is 18^2, 
256 is 16^2, 
196 is 14^2, 
144 is 12^2.

The difference between the numbers being squared is 2.

So the next number in the series should be 10^2, which is 100.

Look at this series: 400, 324, 256, 196, 144.... ... What number should come next?