1
GATE CSE 1990
True or False
+1
-0
State whether the following statement is TRUE / FALSE.

The intersection of two $$CFL's$$ is also $$CFL.$$

A
TRUE
B
FALSE
2
GATE CSE 1990
True or False
+1
-0
State whether the following statement is TRUE / FALSE.

A is recursive if both a and its complement are accepted by Turing Machine M accepts.

A
TRUE
B
FALSE
3
GATE CSE 1990
True or False
+1
-0
State whether the following statement is TRUE / FALSE. The problem is to whether a Turing Machine M accepts input $$w$$ is un-decidable.

A
TRUE
B
FALSE
4
GATE CSE 1990
MCQ (Single Correct Answer)
+2
-0.6
Recursive languages are:
A
A proper superset of context free languages.
B
Always recognizable by pushdown automata.
C
Also called Type $$(0)$$ languages.
D
Recognizable by Turing machines.
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