Odds for various 7even combos.

1) What are the odds in 1 normal deck, the player gets 3 7s for a total 21 while the dealer holds the other 7 up card ?

2) Same question as at 1) but this time for one Spanish 21 blackjack deck ?

3) Odds for getting 3 7s of different suit for a total 21 while the dealer holds a different suit 7 up card for 2, 4, 6 and 8 decks ?

4) Same question as at 3) but this time for a 6 deck Spanish 21 blackjack ?

5) Odds for getting 3 same suit 7s (any suit) for a total 21 for a 4, 6, 8 normal decks ? But for 4, 6, 8 Spanish 21 decks ?

6) Same question/s as at 5) but for a specific suit (such as, say, clubs) of 3 7s ?

7) Odds for getting 3 same suit 7s (any suit) for a total 21 while the dealer holds a same suit 7 up card for a 6 Spanish 21 deck ?

PS: - For this question the odds are the same as at question 4) ?

8) Odds for getting 3 7s of a specific suit for a total 21 while the dealer up card is a 7 of the same suit for a 6 Spanish 21 deck ?

- But for a 6 normal decks ?

9) Odds for getting 3 7s of any suit for a total 21 while the dealer up card is a 7 of any suit for a 6 normal decks ?

10) What are the odds of getting 3 7s of a specific suit for a total and not winning for a 6 deck no no peek/no hole card game ?

- But for a 6 deck peek (on both ace and 10) game ?

*** If this list is too long (sorry for that!) and you only have partial responses, please post what you have, I appreciate any info !