How many qualify only in DI section?
Show Hint
- 12
- 15
- 17
- 21
The Correct Option is C
Solution and Explanation
Only \(D\) equals \(|D|\) minus those in \(D\) with other subjects. Here \(E\cap D=\varnothing\), \(DM\)-only \(=0\), \(DL\)-only \(=0\), and \(DML=5\). Thus \[ \text{Only }D = |D| - |D\cap M\cap L| = 22-5=17. \] \[ \boxed{17} \]
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