A systematic way of reasoning or thinking.

The study of valid reasoning or inference.

तर्कशास्त्र

English Usage: "He majored in logic during his studies."

Hindi Usage: "उसने अपनी पढ़ाई के दौरान तर्कशास्त्र में प्रमुखता प्राप्त की।"

Strong and well-formed; not easily broken.

Certain and reliable; not questionable.

विश्वसनीय

English Usage: "She has a solid plan for the project."

Hindi Usage: "उसके पास परियोजना के लिए एक विश्वसनीय योजना है।"