Posted by **bill** on Friday, May 21, 2010 at 4:29pm.

1. In a survey of a TriDelta chapter with 46 members, 13 were taking mathematics, 33 were taking English, and 6 were taking both. How many were not taking either of these subjects?

- math -
**Bob**, Friday, May 21, 2010 at 4:31pm
No One was Not taking any of these,Because 33+13=46

- math -
**Reiny**, Friday, May 21, 2010 at 4:49pm
N(Math OR English) = N(Math) + N(English) - n(Math AND English)

= 13 + 33 - 6

= 40

So 40 took either Math or English, then

6 took neither of these subjects

You can also do this with Venn diagrams

- math -
**ExplanationCentral**, Monday, April 9, 2012 at 5:42pm
Subtract 6 from 13 and from 33.

Then add 6 back just once.

7 + 27 + 6 = 40 students are taking either one or both of the subjects.

So 46 - 40 = 6 students are taking neither of the subjects.

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