How do you know a limit does not exist? In short, the limit does not exist if there is a lack of continuity in the neighbourhood about the value of interest. Recall that there doesn't need to be continuity at the value of interest, just the neighbourhood is required.

Grand Ayatollah Ali al-Sistani, Iraq's supreme Shia religious authority, has issued rulings forbidding chess. After the 1979 Islamic revolution, playing chess was banned in public in Iran and declared haram, or forbidden, by senior clerics because it was associated with gambling.

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