Letter Equations: if '7 D of the W' means '7 Days of the Week', what do the following mean?

Transcription:

LETTER EQUATIONS

1. 8 B in a B
2. 6 B in an O
3. 8 T on an O
4. 5 V in the A
5. 18 H in a GC
6. 12 S of the Z
7. 8 P in the SS
8. 6 IS on the G
9. 64 S on a CB
10. 7 N of the MS
11. 1000 Y in a M
12. 18 LE in this P
13. 7 B in the HPS
14. 24 S in the AC
15. 13 S in the USF
16. SW and the 7 D
17. 25 PN under 100
18. 23 P of C in the HB

SHIVANSH SHARMA


Many of these are quite common. Some others I've added on my own which you'll not find anywhere on the internet.
For any clarification, comment down below.

• why use a picture of words? Sep 7 '20 at 17:44
• Is there a reason you put your puzzles into images? This makes them less accessible. Sep 7 '20 at 20:06
• I think these "letter equations" are commonly known as Ditloids in reference to the clue 1 D in the L of ID. Sep 8 '20 at 5:06

2 Answers

The others ones already guessed, @hexomino my guess for the 8th:

6 Infinity Stones on the Gauntlet

Partial Answer 17/18

Tojrah has now gotten the other one in their answer

1. 8 Bits in a Byte
2. 6 Balls in an Over (Cricket)
3. 8 Tentacles on an Octopus
4. 5 Vowel in the Alphabet
5. 18 Holes in a Golf Course
6. 12 Signs of the Zodiac
7. 8 Planets in the Solar System
8. see Tojrah's answer
9. 64 Squares on a Chessboard.
10. 7 Notes of the Music Scale.
11. 1000 Years in a Millenium
12. 18 Letter Equations in the Puzzle
13. 7 Books in the Harry Potter Series
14. 24 Spokes in the Ashok Chakra
15. 13 Stripes in the United States Flag
16. Snow White and the 7 Dwarves
17. 25 Prime Numbers under 100
18. 23 Pairs of Chromosome in the Human Body

• good job. The 8th one is a bit tricky. Sep 7 '20 at 8:15
• 3. 8 triangles on an octahedron Sep 7 '20 at 8:54
• @FlorianF Yep, that works too, I suspect there will be more here obtained by pairing 8 with the prefix "octo/octa" Sep 7 '20 at 8:56
• 6 indigenous species on the Galapagos? Dunno, just guessing here. Sep 7 '20 at 9:34
• @PrimeMover Interesting, do you have a reference for that number? I cannot find it Sep 7 '20 at 9:51