Is the complex number read Z or s

Is the complex number read Z or s

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Read Z. plural change and pronunciation rules of nouns:
1. Usually add - s at the end of the word
Generally speaking, s is pronounced as [Z} after vowel or voiced consonant, as [S] after clear consonant, as [TS] after [t] with [t], and as [DZ] after [D] with [D]
2. For words ending with s, SH, CH, x, add - es at the end and read [iz]
3. For words ending with "vowel + Y", add - s to read [Z]; for words ending with consonant + y, change y to I, add - es to read [iz]
4. Most of the words ending with "O" add - s and read [Z]
5. Most of the words ending with f or Fe change f and Fe into V, then add - es and read [VZ]
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