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Question

The following CFG

S->aB|bA, A->a|as|bAA, B->b|bs|aBB

generates strings of terminals that have

a.

odd number of a’s and odd number of b’s

b.

even number of a’s and even number of b’s

c.

equal number of a’s and b’s

d.

not equal number of a’s and b’s

Answer: (c).equal number of a’s and b’s

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Q. The following CFG S->aB|bA, A->a|as|bAA, B->b|bs|aBB generates strings of terminals that have

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