In each of these questions a number series is given. In each series only one number is wrong. Find out the wrong number.

304, 300, 316, 332, 364, 428, 556

The correct option is 300.

Let us analyze the given number series to identify the pattern and find the incorrect number:

304, 300, 316, 332, 364, 428, 556

Let us calculate the differences between consecutive terms starting from the end of the series, where the pattern becomes clearer:

$556-428=128$

$428-364=64$

$364-332=32$

$332-316=16$

Notice that each difference between successive numbers is halved as we move towards the left:

$128\to 64\to 32\to 16$

These differences are powers of 2:

$2^7=128$

$2^6=64$

$2^5=32$

$2^4=16$

Following this pattern, the preceding differences should be $2^3=8$ and $2^2=4$.

Subtracting 8 from 316 gives the correct second number:

$316-8=308$

Checking the first term with the correct second term (308):

$308-4=304$

This matches the first term in the series (304).

Therefore, the number 300 is wrong and should be replaced by 308 to follow the pattern.