TCS
Company
Numerical Ability
Permutation and Combination
A man goes to a theatre to watch a movie along with his 4 family members and buy tickets. Ticket seller gives an offer “if you buy 6 ticket s, I will give extra 4 tickets” .that man bought 6 tickets along with extra 4 tickets. Then the ticket counter was closed .the man had 5 extra tickets .in theatre 10 persons were standing outside without getting ticket.
The wanted to give 5 tickets randomly to 5 persons for minimum cost(total tickets only for Rupees 15).in how many way
that tickets can be distributed to 5 persons with the cost of rupees 15(totl cost of 5 tickets).note:same amount should not
be repeated at a time and Rupees 0 should not be taken as amount
Read Solution (Total 8)
-
- To select 5 people from 10-10c5
and there will be one case distribtion lie-6,4,3,2 and 1 rupees respectively.
Now permution of these 5 notes-5!
hence Required solution is-10c5*5!
- 9 years agoHelpfull: Yes(12) No(3)
- 10 people selection=10c5
and condition is that no number shoould repeat and 0 should not be their and 5 tickt cost should be =15 so this can be formed bo only one way 1,2,3,4,5(rs)=1ways=1! and these can be distributed in 5! ways......... so 5!*1!=5! ans will be 5!*10c5 - 9 years agoHelpfull: Yes(10) No(0)
- 10c1 with ticket cost rupee 5 = 10
9c1 with ticket cost rupee 4 = 9
8c1 with ticket cost rupee 3 = 8
7c1 with ticket cost rupee 2 = 7
6c1 with ticket cost rupee 1 = 6
addition 40 - 9 years agoHelpfull: Yes(6) No(0)
- 5 tickets at the cost of Rs 1 ,Rs 2, Rs 3, Rs 4, Rs 5 each respectively.
- 9 years agoHelpfull: Yes(3) No(4)
- To select 5 people 5c5.and to distribute 5!.total 5c5.5!
- 9 years agoHelpfull: Yes(2) No(6)
- Ans)10p5(10c5*5!)===>15 rupees divided int 1,2,3,4,5 rs.
Now permutation====>with 10 men==10p5. - 9 years agoHelpfull: Yes(2) No(0)
- can anyone explain briefly....
- 9 years agoHelpfull: Yes(1) No(0)
- did not understand the solution .. can anyone explain it
- 9 years agoHelpfull: Yes(1) No(0)
TCS Other Question