Discrete Mathematics | MA3354 | Unit 2 | Combinatorics | Principle of Inclusion & Exclusion in Tamil

[@Parthiban.mParthi-q2r]

Thankyou mam❤

[@rameshselvaraj1341]

Mam ques la verum not divisible by 2 nor 3 nor 5 dha irundhadhunaalum adha divisible by 7 nu namba eduthukunu adhuku problem pota ok la mam?

[@arunsuresh8547]

Please upload the 3rd ,4th ,5th unit fast mam .. have you uploaded mam ?

[@Monk3y-D-Luffx]

4) How many integers between 1 to 100 that are
i) not divisible by 7,11 or 13
Ans :
|AuBuC| = |A| + |B| + |C| - |A^B| - |B^C| - |A^C| + |A^B^C|
|AuBuC| = 14+9+7-1-1-0+0 = 28
Total - |AuBuC|
100 - 28 = 72
ii) divisible by 3 not 7
Ans :
|AuB| = |A| - |A^B|
|AuB| = 33 - 4 = 29
|AuB| = 29
(^ AND)

[@Yuvi.R.yuvanesh]

Complete

[@Monk3y-D-Luffx]

3) Determine the number of postive integers n 1 < n < 2000, That are not divisible by 2,3 or 5 but are divisible by 7
Ans :
= |D|-|A^D|-|B^D|-|C^D|+|A^B^D|+|B^C^D|+|C^D^A|-|A^B^C^D|
= 285-142-95-57+47+19+28-9
= 76
( ^ AND )

[@Timefull_tales]

how bro