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Examples on P&C (Part II)
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Sachin Rana is teaching live on Unacademy Plus

Sachin Rana
IVth Year UG, IIT Bombay | YouTuber (143k subs) | Mentored 3 under 100 ranks in JEE Advanced | No. 1 educator for Organic Chemistry

Unacademy user
Watin fr remaining videos ....thnx...pls compile ur videos under one heading named medieval history!!!
Sir please upload video lectures of your content and knowledge these video lectures are all made with help of cengage algebra mathematics book
All questions are from cengage book
bhiya i am in fittjee. i practice the questions from my package but the questions are very less . so yu tell me which book i should take for refrence cengage or sk goel
In the ques. 5 red and 6 white balls, only the first two combinations should be considered in order to select 6 balls such that atleast 2 balls of red and 2 balls of white remain in the box.
In Q4, why we haven't considered the case when d=4 when we can form the number 1234321 which satisfies the conditions given in the question?
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