Who has not been prime minister of Pakistan?

ان میں سے کون پاکستان کا وزیر اعظم نہیں بنا؟

Nawaz Sharif

Liaqat Ali Khan

Benazir

Ayoub Khan

All of these

Field Marshal Muhammad Ayub Khan was the president of Pakistan.

General Ayoub Khan remained PM of Pakistan from 7 October 1958 to 26 October 1958.