There is no trick that, when you use it, it will always figure out if a sequence is real or not. But there are a few things you can look out for. By themselves, these are not very helpful, but when you put them together, you just might be able to figure out if the sequence is real or not.
When there are extreme cases, such as 10 Tails in a row, it’s usually real, because someone making a random sequence won’t include extreme cases, as
it doesn’t seem random.
Real random sequences are not balanced at all. They usually have more of either Tails or Heads. If a sequence is very balanced, it might be fake.
People who make random sequences like to repeat ideas. If they have a lot of clusters (A few Heads or Tails together) at the start, then they are likely to carry on using clusters. If they have a lot of singles (An isolated Head or Tail), they might carry on using a lot of singles. Random sequences are more varied.
Try putting yourself into the mind of someone who is making a sequence. Do you think that you could create something like that sequence?
People that make sequences are crafty. If a sequence meets all of the tips above, consider that it is fake, because although these are good things to look for, it is rare that they all apply.
And most importantly, don't let your thoughts limit you. The sequence randomly generated could exceed your wildest expectations.
Thanks for reading!