Doubt TOC

Question

which of the following is/are decidable?

1)for some input if an arbitrary TM makes 5 moves.

2) whether an arbitary TM halts within 5 steps

3) whether an arbitary TM prints some non blank character

4)the set of codes for TM that never make a left move.

5)an arbitrary TM halts after 100 steps

6)a TM prints a specific letter

7) a turing machine computes the product of two numbers.

Comments

check this https://gateoverflow.in/234019/decidability

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Thanks it really helped.

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what about 1,2 and 5 and last one .

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All 1,2,5 and last are decidable. 6 is undecidable but if there was some instead of specific then it would also be decidable