0 reads0 ratings0 helpful
From (6) boys and (4) girls, (4) students are to be selected with at least (2) girls. How many ways are there?(6) लड़कों और (4) लड़कियों में से कुल (4) विद्यार्थी चुनने हैं जिनमें कम से कम (2) लड़कियां हों। कितने तरीके हैं?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (105)(105)
The cases are (2), (3), or (4) girls. The correct count is (\binom{4}{2}\binom{6}{2}+\binom{4}{3}\binom{6}{1}+\binom{4}{4}=115).मामले हैं (2) लड़कियां, (3) लड़कियां या (4) लड़कियां। कुल (\binom{4}{2}\binom{6}{2}+\binom{4}{3}\binom{6}{1}+\binom{4}{4}=115) नहीं, सही गणना (90+24+1=115) है।
Student feedback
Was this question useful?
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Difficulty
Easy0%
Medium0%
Hard0%
Was the explanation clear?
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
