<prompt> Theha polelo e tloaelehileng e bontšang thapo e nepahetseng ea bolelele ba 5 e nang le linomoro feela.nan  <response>: Instruction in English: Construct a regular expression that characterizes a valid string of length 5 containing only numbers. . Response in English: The regular expression that characterizes a valid string of length 5 containing only numbers is d5.Explanation:- signifies the start of the string- d signifies a digit 0-9- 5 signifies that the digit should occur exactly 5 times- signifies the end of the string. . Response in Sesotho: Polelo e tloaelehileng e bontšang thapo e nepahetseng ea bolelele ba 5 e nang le linomoro feela ke d5. Tlhaloso: - e bolela ho qala ha khoele - d e bolela palo 0-9 - 5 e bolela hore nomoro e tlameha ho hlaha ka makhetlo a 5 hantle - e bolela qetello ea khoele. . 