Log ind
JEE Advance - Mathematics (1998 - No. 9)
Seven white balls and three black balls are randomly placed in a row. The probability that no two black balls are placed adjacently equals
$$1/2$$
$$7/15$$
$$2/15$$
$$1/3$$
Kommentarer (0)
Log ind for at kommentere
Reklame
Tillad, at javascript indlæser denne side korrekt
