পাঁচ বাহুবিশিষ্ট বহুভূজের কতটি কর্ণ আছে?
Solution
Correct Answer: Option C
n বাহু বিশিষ্ট বহুভুজের কর্ণের সংখ্যা =ⁿC₂-n
=⁵C₂-5
=(5!/2!3!)-5
=(120/2×6)-5
=10-5
=5
=⁵C₂-5
=(5!/2!3!)-5
=(120/2×6)-5
=10-5
=5
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