In the 1st question:
Reasoning:
1. The last two letters of the word shall be the same as the middle word in the example (see the other two words against the example), so its last two letters must be -DE;
2. The word must be 5-letter because all three words in the example are 4-letter, and the other two words in the question are 5-letter.
So the answer is (3);
In the 2nd question:
Reasoning:
According to the example, the second letter of the word must be the immediate letter in alphabetical sequence after the second letter of the left word, which is "I" in this case. In the example, the second letter of BOAR is "O", which is alphabetically the letter after "N".
So the answer is (2).
In the 3rd question:
Reasoning:
According to the example, the 1st letter of the word is the second letter of the left word.
Therefore the answer is (1).