Hello kid,
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Look, now if you have seen the thumbnails of video's which says score these many marks in this time then just stop watching YouTube. Maybe they tell you the important topics and lessons which helps you for scoring marks, but they won't tell you what questions are going to occur.
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YouTubers use clickbait, which means they attract viewers to visit there channel by putting interesting things on thumbnail. So, don't be fooled.
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Now, you know what to prepare and what not to, you got Enough time to prepare. Now just revise till the day of examination. All the best