allery৭৫ জন কৰ্মচাৰীৰ ভিতৰত ৪০ জনে Java জানে, ৩৫ জনে Python জানে আৰু ১০ জনে এটাও নাজানে। কিমানজনে দুয়োটা জানে?
A20
B10
C25
D15
Answer & Solution
Correct answer: B. 10
৬৫ জনে কমেও এটা ভাষা জানে, গতিকে দুয়োটা জনা লোক = 40 + 35 - 65 = 10।
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