Which one has a higher chance of success?

If I had to guess a number from 1 to 100 or guess a number from 1 to 10 then 1 to 30 then 1 to 50, which one has a higher chance of success? (One gues

If I had to guess a number from 1 to 100 or guess a number from 1 to 10 then 1 to 30 then 1 to 50, which one has a higher chance of success? (One guess of 1-100 or 3 guesses of 1-10/30/50)

or:If I had to guess a number from 1 to 100 or guess a number from 1 to 10 then 1 to 30 then 1 to 50, which one has a higher chance of success? (One guess of 1-100 or 3 guesses of 1-10/30/50)

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