Which of the following are true about Sets?
Sets can contain null elements
Sets can contain duplicate elements
Set can contain atmost only one null element
It contains an iterator() method
Which year the Regional Assembly language invented ?
1951
1957
1962
1960
Which year the LISP language invented ?
1958
1968
1948
1978
Which year the FACT language invented ?
1959
Which year the COBOL language invented ?
1965
1953
1983
Which year the APL language invented ?
1952
1975
Which year the Simula language invented ?
1954
1961
Which year the BASIC language invented ?
1955
1963
1964
Which year the PL/I language invented ?
Which year the Pascal language invented ?
1971
1970