Put this in a bot's remotes. Choose whichever one you like. The first one has 10 numbers, the second has 50, the third has 100, and the fourth has 1000.

on *:TEXT:!nummatch*:{
  set %tomatch $rand(1,10)
  set %trymatch $2
  msg $chan The number you chose was: %trymatch
  msg $chan The number to match was %tomatch
  if (%trymatch == %tomatch) { 
  msg $chan Congradulations $nick Your number: %trymatch matched the number chosen: %tomatch. You win!
}
}

on *:TEXT:!nummatch*:{
  set %tomatch $rand(1,50)
  set %trymatch $2
  msg $chan The number you chose was: %trymatch
  msg $chan The number to match was %tomatch
  if (%trymatch == %tomatch) { 
  msg $chan Congradulations $nick Your number: %trymatch matched the number chosen: %tomatch. You win!
}
}
on *:TEXT:!nummatch*:{
  set %tomatch $rand(1,100)
  set %trymatch $2
  msg $chan The number you chose was: %trymatch
  msg $chan The number to match was %tomatch
  if (%trymatch == %tomatch) { 
  msg $chan Congradulations $nick Your number: %trymatch matched the number chosen: %tomatch. You win!
}
}
on *:TEXT:!nummatch*:{
  set %tomatch $rand(1,1000)
  set %trymatch $2
  msg $chan The number you chose was: %trymatch
  msg $chan The number to match was %tomatch
  if (%trymatch == %tomatch) { 
  msg $chan Congradulations $nick Your number: %trymatch matched the number chosen: %tomatch. You win!
}
}