alleryଦୁଇଟି ସେଟ୍ର ସଂଯୋଗ (union) ରେ 30 ଟି ଉପାଦାନ ଅଛି। ଗୋଟିଏ ସେଟ୍ରେ 20 ଟି ଏବଂ ଅନ୍ୟଟିରେ 18 ଟି ଅଛି। ସେମାନଙ୍କ ମଧ୍ୟରେ କେତୋଟି ସାଧାରଣ ଅଛି?
A12
B10
C8
D6
Answer & Solution
Correct answer: C. 8
Overlap = 20 + 18 - 30 = 8 ଜଣ ସଦସ୍ୟ ଦୁଇଥର ଗଣନା କରାଯାଇଛି।
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