alleryA আৰু B সংহতি দুটাৰ পৰস্পৰ ছেদী বৃত্ত দুটাত কেৱল A-ত ১২ টা, দুয়োটাতে ৮ টা আৰু কেৱল B-ত ৫ টা উপাদান আছে। সংযোগটো কিমান?
A20
B30
C15
D25
Answer & Solution
Correct answer: D. 25
তিনিওটা অঞ্চল যোগ কৰিলে 12 + 8 + 5 = 25 টা উপাদান পোৱা যায়।
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