the year 6 ball overs came in instead of 8 balls in cricket?

Answer 1

This has already been discussed several times here. Please see the last discussion :

http://answers.yahoo.com/question/index;_ylt=AnV62M9jYXghMe9YK0gbknvsy6IX?qid=20061121221701AANaWZ4&show=7#profile-info-AA12254893

Answer 2

The number of balls in an over varied from country to country from time to time.

Modern day Test cricket (since 1979/80) has been played all over the world with six balls per over. However, Test cricket started with 4 balls per over and has had varying number of balls per over around the world up to 1979/80.

The details of number of balls per over used by different countries are given below:

In England:

1880 to 1888: 4
1890 to 1899: 5
1902 to 1938: 6
1939 : 8
1946 to date: 6

In Australia:

1876/77 to 1887/88: 4
1891/92 to 1920/21: 6
1924/25 : 8
1928/29 to 1932/33: 6
1936/37 to 1978/79: 8
1979/80 to date : 6

In South Africa:

1891/92 to 1898/99: 5
1902/03 to 1935/36: 6
1938/39 to 1957/58: 8
1961/62 to date : 6

In New Zealand:

1929/30 to 1967/68: 6
1968/69 to 1978/79: 8
1979/80 to date : 6

In Pakistan:

1954/55 to 1972/73: 6
1974/75 to 1977/78: 8
1978/79 to date : 6

In India, West Indies, Sri Lanka, Zimbabwe, Bangladesh and United Arab Emirates (venue, not host) all Test matches were played with 6 ball overs.