Lec-7: Combination Techniques | Probability and Statistics

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[MeritSeekers]

Answer of example 2 is 7200. I forgot arrangements after finding out the selection.
So 60 x 5! = 7200.

Please Correct This.

[vaishnav.rathod]

Sir question 3 main agar student dono book nhi lena chahta ho toh uska bhi case include nhi hoga kya?

[SakshiVerma-vg]

Sir, question 1 ke 2nd part may maane atleast 2 mens waale may 5 may se 2 men select krne ke 5c2 ways and remaining people which are 9 . Unme se bhi to simply 4 select kr sakte hai .
Therefore overall answer would be (5c2).(9c4)
Is this the correct answer

[mohit_soni_]

thank you so much sir and gate smashers team for making such an amazing content💛

[MChanakya]

Sir, I have a doubt in Example 2.
Sir, isme selection karne k baad, i.e., (5C3 * 4C2), 5! se multiply kyu nahi kar rahe total number of words/arrangements find out karne k liye?
Thank you, sir, for such easy to understand lectures.🙏🙏🙇🙇

[krTX]

Sir sir sir sir, galt h sayad question 2 ka solution.
5C, 4V waale question mein, aapne bas selection karke chodd diya. Arrange nii karenge kya???
Total number of words pucha h toh karna hoga na arrangement bhi.

aapne keval kitne different alphabets select kar sakte h woh kara. Kitne words banenge uske liye unhe arrange bhi toh karna hoga na sir, toh 5! se multiply bhi karna hoga kyuki word length 5 hai (3 consonant, and 2 vowels) toh 5! arrangement possible h selected alphabets ke !!!!

Sir, please correct me if I'm wrong with proper explaination sir. thank you.