ISRO Quiz 2023 39

Which of the following is/are undecidable?

(i) G₁ and G₂ are DCFG is L(G₁)  L (G₂) = ϕ?

(ii) G₁ and G₂ are DCFG is L (G₁)  L (G₂)?

(iii) G and CFG, Is L(G) is regular?

(iv) G₁ and G₂ be DCFG, Is L(G₁) = L(G₂)?

The value of the integral  is _________.

Which of the following controls the manner of interaction between the users

and the operating System?

Consider the following syntax directed definition shown below:

E  → E + T {E.val = E.val + T.val +1}
E  → T {E.val = T.val +1}
T  → T ∗ F {T.val = T.val + F.val +1}
T  → F {T.val = F.val +1}
F  → id {F.val = 1}

For an input a + b ∗ c + d this translation scheme will give outputs as:

Select the option that represents the correct order of the given words as they would appear in an English dictionary.

1). Euphoria

2). Euthanasia

3). Everything

4). Evening

5).Eustace

6).European

7).Euclid