In eco 103 class. 18 students has account in bank A, 25 in bank B,...
In eco 103 class. 18 students has account in bank A, 25 in bank B,...
In eco 103 class. 18 students has account in bank A, 25 in bank B, 23 in bank C, 9 has in A and B, 10 has in B and C and 6 has in A and C.
If there were 50 students altogether and 5 students did not have account in any of the three banks. How many students have account in;
1. All three banks
2. Only in B
3. C bank but not in B bank and
4. A and C banks but not in B bank?
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