दिए गए संख्या युग्मों में दूसरी संख्या पहली संख्या पर एक निश्चित गणितीय संक्रिया (operations) करके प्राप्त की जाती है। एक को छोड़कर अन्य सभी संख्या युग्मों में समान संक्रिया का पालन किया जाता है। उस विषम संख्या युग्म को ज्ञात कीजिए।

Based on the alphabetical order, three of the following four are alike in a certain way and thus form a group. Which is the one that does not belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter cluster)

Based on the English alphabetical order, three of the following four letter cluster pairs are alike in a certain way and thus form a group. Which is the one that does not belong to that group? (Note: The odd man out is not based on the number of consonants/vowels or their position in the letter cluster)