<prompt> Fikiria kutupa sarafu mara 50. Je, kuna uwezekano gani wa kutazama vichwa mara 25 yaani, majaribio 25 yenye mafanikio?  <response>: Jaribio la maslahi lina majaribio 50 tofauti; kwa hivyo, n50. Kwa kuzingatia kisa cha majaribio 25 yaliyofaulu ambapo j25. Uwezekano leftP_25kulia nianzailiyopangwaP_25 Cn, jkushotoP_Ekuliajkushoto1-P_Ekulian-j C50,25kushotoP_Ekulia25kushoto1-P_Ekulia25 kushotofrac50 !25 !25 !kulialeftfrac12kulia25leftfrac1 2kulia25kushoto1.26 mara 1014kuliakushoto8.88 mara 10-16kulia0.11mwishoiliyopangwa 