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

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

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

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

Using 6 different flags, how many different signals can be made by using atleast three flags, arranging on above the other ?

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.