One-minute time frame is the best for intraday trades, but you must master the technicals by heart.
Which is the best time frame used by Intraday traders?
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Intraday TF is depend on your analysis. For best results use 5min TF for execution or you can use 3min also. And for analysis you can go with 15min and 1HR TF... Index and stocks both can be traded on this with MTF analysis.