[" drawn from the nroterl "(4)/(5)" is that "(1)/(10000)" sillin "(4)/(8)" aren a afficiti "(3)/(8)],[" 12.A gin from "(1)/(87)" inferfact "(4)/(89)" is for "(4)/(5)" .A coin is tossed.A reports that a "],[" [Probability that A speaks truth is "(4)/(5)" A coin is tossed.A reports that a "],[" [Probability that A speaks truth is "(4)/(5)" A coin is tossed.A reports that a "],[" head appears.Find the probability that actually there was head."]