The former is correct, the latter one would also be correct in a sense that either the phrase is the blue and red condition and or phrase is missing such that it would be like: The state examinations

to judge the teacher required showing the kids colored cards in either the blue and red or the black and white condition.

What are some tips to avoid bullying in the workplace or school?

The former is correct, the latter one would also be correct in a sense that either the phrase is the blue and red condition and or phrase is missing such that it would be like: The state examinations

to judge the teacher required showing the kids colored cards in either the blue and red or the black and white condition.

What are some tips to avoid bullying in the workplace or school?

The former is correct, the latter one would also be correct in a sense that either the phrase is the blue and red condition and or phrase is missing such that it would be like: The state examinations

to judge the teacher required showing the kids colored cards in either the blue and red or the black and white condition.

What are some tips to avoid bullying in the workplace or school?

The former is correct, the latter one would also be correct in a sense that either the phrase is the blue and red condition and or phrase is missing such that it would be like: The state examinations

to judge the teacher required showing the kids colored cards in either the blue and red or the black and white condition.

What are some tips to avoid bullying in the workplace or school?

The former is correct, the latter one would also be correct in a sense that either the phrase is the blue and red condition and or phrase is missing such that it would be like: The state examinations

to judge the teacher required showing the kids colored cards in either the blue and red or the black and white condition.

What are some tips to avoid bullying in the workplace or school?