How do you pronounce 不成?

Q: How do you pronounce 不成? A: bat1 sing4, e.g.

不成 (bat1 sing4) — meaning, pronunciation, examples

不成 (bat1 sing4, bù chéng) — won't do; unable to; (at the end of a rhetorical question) can that be?

不乏其人 (bat1 fat6 kei4 jan4) — not lacking people who share same thought or qualifications
不予置評 (bat1 jyu5 zi3 ping4) — No comments
不值一提 (bat1 zik6 jat1 tai4) — Unworthy of being mentioned
不做 (bat1 zou6) — Not to do
不僅僅 (bat1 gan2 gan2) — Not only
不入虎穴 (bat1 jap6 fu2 jyut6) — lit. not entering tiger's den, meaning without taking risk