Step 1: We need to identify the word pair where the relationship is different from the others.
- ``Error" and ``Accurate" are antonyms, as ``Error" means something incorrect and ``Accurate" means correct.
- ``Careless" and ``Casual" are related words but they do not form an antonymic relationship. ``Careless" refers to lack of attention, while ``Casual" refers to something relaxed or informal, not necessarily opposite.
- ``Strength" and ``Lethargy" are antonyms, as ``Strength" refers to power and ``Lethargy" refers to weakness or lack of energy.
- ``Gloomy" and ``Cheerful" are antonyms, as ``Gloomy" refers to being sad and ``Cheerful" refers to being happy.
Step 2: The odd pair is (B) ``Careless : Casual" because it does not represent an antonymic relationship like the others.
Thus, the correct answer is option (B) Careless : Casual.
Forthrightness in speech may not always be a desirable quality.
Select the figure that can replace the question mark (?) in the following series.

`A + B' means`A is the mother of B'.
`A - B' means`A is the brother of B'.
`A × B' means`A is the father of B'.
`A ÷ B' means`A is the daughter of B'.
Given the relationship: \[ P - K × Y - J ÷ S + R \] Which of the following statements is not correct?
Three different positions of the same dice are shown, the six faces of which are numbered from 1 to 6. Select the number that will be on the face opposite to the one showing`6'. 
Select the option in which the given figure X is embedded (rotation is not allowed). 
Select the letter-cluster that can replace the question mark (?) in the following series:
TULG, WRPC, ZOTY, CLXU, ?