The number of different messages produced by using five signals with three dots and two dashes is

What is the number of different messages that can be represented by three 0's and two 1's ?

The number of different ways in which five alike dashes and eight alike dots can be arranged using only seven of these dashes and dots is a.350 b.120 c.1287 d.none of these

Find the number of different signals that can be generated by arranging at least 2 flags in order (one below the other) on a vertical staff, if five different flags are available.

Find the number of different signals that can be generated by arranging at least 2 flags in order (one below the other) on a vertical staff, if five different flags are available.

Find the number of different signals that can be generated by arranging at least 2 flags in order (one below the other) on a vertical staff, if five different flags are available.

Find the number of different signals that can be generated by arranging at least 2 flags in order (one below the other) on a vertical staff, if five different flags are available.

Find the number of different signals that can be generated by arranging at least 2 flags in order (one below that other) on a vertical staff, if five different flags are available.

Find the unit digitof the number of five digit number that can be formed by using two 22' s three 3s, one zero and one 5