Loadbalance a URL to 3 URLs

you can use the RAND funtion in irule ,try below irule

when HTTP_REQUEST {
# Generate a random number between 1 and 3
set random_num [expr {int(rand() * 3) + 1}]
if {[string tolower [HTTP::path]] eq "/exampletext"} {
HTTP::redirect http://abc$random_num\ee.xyz.com/exampletext_$random_num
}
}