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Class - 11 (Mixed problem on permutation and combination - 4)
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Class - 11 (Mixed problem on permutation and combination - 4)

## Bharat Gupta is teaching live on Unacademy Plus

Bharat Gupta
Engineer by degree Mathematician by Heart. Having 22 years of teaching experience. Visit my youtube channel BHARAT GUPTA-RADIX .

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sir in the question of selecting 7, can we do it this way that 7 can be written in 3 ways * 10*10 as repetition is allowed? 3*10*10=300
AT
Sir, there exists a simpler logic to solve second problem || Select two chairs a space aprt for Ram and Rahim. Now our reference point is fixed and the remaining people can be seated on 14 vacant chairs in 14! ways {There is no need to consider the chair between R and R as a different case}. || Since Ram and Rahim can interchange seats, hence *2.
Tanya Jain
4 months ago
lets discuss the problems with each other?
1. COMBINATION Permutation and combination mixed Problem part-4 Follow Upvote

2. Problem for this lesson In how many ways can 100 students be divided into 4 squads of 10, 20, 30 and 40 respectively? a. 1800 b. 18! C. 190 d. None of these There are 16 students including two brothers Ram and Rahim. In how many ways can they be arranged around the circular table if there are exactly one student between Ram and Rahim? a. 13! x 2 b. 14! x 2 c. 14! d. 13! The number of times the digit 7 will be written when listing the integers from 1 to 1000 is: a. 100 b. 289 C. 299 d. 300

3. In how many ways can 100 students be divided into 4 squads of 10, 20, 30 and 40 respectively? a. 1800 b. 18! c. 190 d. None of these

4. In how many ways can 100 students be divided into 4 squads of 10, 20, 30 and 40 respectively? a. 1800 b. 18! c. 190 d. None of these 8

5. In how many ways can 100 students be divided into 4 squads of 10, 20, 30 and 40 respectively? a. 1800 b. 18! c. 190 d. None of these 8 goC

6. In how many ways can 100 students be divided into 4 squads of 10, 20, 30 and 40 respectively? a. 1800 b. 18! c. 190 d. None of these 3rd let 8 toc

7. In how many ways can 100 students be divided into 4 squads of 10, 20, 30 and 40 respectively? a. 1800 b. 18! c. 190 d. None of these 8 goC toc oLwo

8. In how many ways can 100 students be divided into 4 squads of 10, 20, 30 and 40 respectively? a. 1800 b.18! c. 190 d. None of these t0 c L2o SD

9. There are 16 students including two brothers Ram and Rahim. In how many ways can they be arranged around the circular table if there are exactly one student between Ram and Rahim? a. 13! x 2 b. 14! x 2c. 14! d. 13!

10. There are 16 students including two brothers Ram and Rahim. In how many ways can they be arranged around the circular table if there are exactly one student between Ram and Rahim? a. 13! x 2 b. 14! x 2c. 14! d. 13! first s 14C

11. There are 16 students including two brothers Ram and Rahim. In how many ways can they be arranged around the circular table if there are exactly one student between Ram and Rahim? a. 13! x 2 b. 14! x 2c. 14! d. 13! Becend slep Now Kam auel Rahim aaira Third stp deno in 14c 12 12

12. The number of times the digit 7 will be written when listing the integers from 1 to 1000 is: a. 100 b. 289 c. 299 d. 300

13. The number of times the digit 7 will be written when listing the integers from 1 to 1000 is: a. 100 b. 289 c. 299 d. 300

14. The number of times the digit 7 will be written when listing the integers from 1 to 1000 is: a. 100 b. 289 c. 299 d. 300 Co-3 "-243.pguf);

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