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Class - 09 (Mixed problem on permutation and combination - 2)
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Class - 09 (Mixed problem on permutation and combination - 2)

## 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 .

U
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thank you sir
we have eee so selecting ee should also be considered
sir pl share some more examples on it.. if there will be 3 like words present then how many type of grouping will be
sir pl tell me ..what will be in 5 or 6 letter word.. how to make such combination??
1. COMBINATION Permutation and combination mixed Problem part- 2 Follow Upvote

2. Problem for this lessor How many words can be formed by taking 4 letters at a time out of the letters of the word 'MATHEMATICS'? a. 1680 How many four-letter words can be formed using the letters of the word 'INEFFECTIVE'? a. 840 b. 2454 c. 2436 d. 2210 b. 1440 c. 1218 d. 1422

3. how many words can be formed by taking 4 letters at a time out of the letters of the word 'MATHEMATICS'? a. 1680 b. 2454 C. 2436 d. 2210

4. how many words can be formed by taking 4 letters at a time out of the letters of the word 'MATHEMATICS'? a. 1680 b. 2454 C. 2436 d. 2210 MATHE MATICS 0

5. how many words can be formed by taking 4 letters at a time out of the letters of the word 'MATHEMATICS'? a. 1680 b. 2454 C. 2436 d. 2210 MATHE MATICS 0 Le =18

6. how many words can be formed by taking 4 letters at a time out of the letters of the word 'MATHEMATICS'? a. 1680 b. 2454 C. 2436 d. 2210 MATHE MATICS

7. how many words can be formed by taking 4 letters at a time out of the letters of the word 'MATHEMATICS'? a. 1680 b. 2454 C. 2436 d. 2210 MATHE MATIC S 2 2 18

8. how many words can be formed by taking 4 letters at a time out of the letters of the word 'MATHEMATICS'? a. 1680 b. 2454 C. 2436 d. 2210 MATHE MATIC s 680 2

9. How many four-letter words can be formed using the letters of the word 'INEFFECTIVE'? a. 840 b. 1440 c. 1218 d. 1422

10. How many four-letter words can be formed using the letters of the word 'INEFFECTIVE'? a. 840 b. 1440 c. 1218 d. 1422

11. How many four-letter words can be formed using the letters of the word 'INEFFECTIVE'? a. 840 b. 1440 c. 1218 d. 1422 0

12. How many four-letter words can be formed using the letters of the word INEFFECTIVE' ? a. 840 b. 1440 c. 1218 d. 1422 0 2

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