Book
Maths Puzzle
Numerical Ability
How many bit strings of length 8 contain either 3 consecutive zeros or 4 consecutive ones?
Read Solution (Total 2)
-
- First of all select 3places among8. It can be achieved by 8c3 Ways and then remaining5 Places can be filled in 2 Pow 5 Ways ie 32 Ways.now for filling 1s in 4 Places follow the same. So, no. Of ways = (8c3 * 1 * 2^5 ) +
- 9 years agoHelpfull: Yes(0) No(2)
- First of all select 3places among8. It can be achieved by 8c3 Ways and then remaining5 Places can be filled in 2 Pow 5 Ways ie 32 Ways.now for filling 1s in 4 Places follow the same. So, no. Of ways = (8c3 * 1 * 2^5 ) + (8c4 *1 * 2^4)
- 9 years agoHelpfull: Yes(0) No(3)
Book Other Question