g. c. d (136, 221, 391) = …….
136 = 2 × 2 × 2 × 17
221 = 13 × 17
391 = 17 × 23
So, g. c. d. (136, 221, 391) = 17
AI is thinking…
Couldn't generate an explanation.
Generated by AI. May contain inaccuracies — always verify with your textbook.