61. Which of the following statements is not correct?

- Option : D
- Explanation :

Recursive languages are closed under intersection. So, option (D) is correct.

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62. Context free grammar is not closed under:

- Option : B
- Explanation :

Context free grammar are not closed under Complementation. So, option (B) is correct.

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64. A 4×4 DFT matrix is given by :

(j

- Option : D
- Explanation :

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The value of b gives the units of entropy. The unit for b=10 is :

(1) bits

(2) bann

(3) nats (4) deca

- Option : D
- Explanation :

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