allery1 থেকে 100 পর্যন্ত কতগুলি পূর্ণসংখ্যা 2 বা 5 দ্বারা বিভাজ্য?
A70
B50
C60
D65
Answer & Solution
Correct answer: C. 60
2-এর গুণিতক হল 50টি, 5-এর গুণিতক হল 20টি, 10-এর গুণিতক হল 10টি, সুতরাং 50 + 20 - 10 = 60।
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