1977 | 1 Episodes

Season 0 of Think of a Number premiered on April 2, 1977.

1978 | 6 Episodes

Season 1 of Think of a Number premiered on April 12, 1978.

1979 | 6 Episodes

Season 2 of Think of a Number premiered on September 12, 1979.

1980 | 6 Episodes

Season 3 of Think of a Number premiered on September 10, 1980.

1982 | 6 Episodes

Season 4 of Think of a Number premiered on September 15, 1982.

1984 | 6 Episodes

Season 5 of Think of a Number premiered on January 4, 1984.