Exercise 2: Tracing (zp),Y's Effective Address — Possible Solution
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GIVEN
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Zero page address $10 holds the byte $00
Zero page address $11 holds the byte $30
Y = $05
Instruction: LDA ($10),Y

APPLYING THE (ZP),Y FORMULA
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Per this chapter's own explanation, (zp),Y works in two steps:

1. Read the 16-bit pointer stored starting at the zero-page address
   given in the instruction ($10 here) — the low byte comes from $10
   itself, and the high byte comes from the next address over, $11.

   Low byte  (from $10) = $00
   High byte (from $11) = $30

   Combined, the pointer value is $3000.

2. Add Y to that pointer VALUE (not to the zero-page address $10
   itself) to get the final effective address:

   effective address = pointer value + Y
                      = $3000 + $05
                      = $3005

RESULT
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LDA ($10),Y reads from effective address $3005.

WHY THIS WORKS AS AN ANSWER
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It correctly reads the pointer's low and high bytes from the right
zero-page locations ($10 and $11, not just $10 alone), correctly
combines them into the full 16-bit pointer value $3000, and correctly
adds Y to the POINTER VALUE rather than mistakenly adding Y to the
zero-page address $10 itself — the exact distinction that separates
(zp),Y from the different (zp,X) mode the chapter also describes.