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saipritam mishra
Answers (1)
Define x: Let the number of marbles in the bag be x Take out half and put back 1 (1st Time): ⇒1/2 x + 1 Take out half and put back 1 (2nd Time): ⇒ 1/2 (1/2 x + 1) + 1 ⇒ 1/4x + 1/2 + 1 ⇒ 1/4x + 3/2 Take out half and put back 1 (3rd Time): ⇒ 1/2
