The word(s) "whether" appears 29 time(s) in 25 verse(s) in Quran in Muhammad Habib Shakir translation.

(21) Then ask them whether your Lord has daughters and they have sons.

(22) Whoever does an evil, he shall not be recompensed (with aught) but the like of it, and whoever does good, whether male or female, and he is a believer, these shall enter the garden, in which they shall be given sustenance without measure.

(23) It is alike to them whether you beg forgiveness for them or do not beg forgiveness for them; Allah will never forgive them; surely Allah does not guide the transgressing people.

(24) And that we know not whether evil is meant for those who are on earth or whether their Lord means to bring them good:

(25) Say: I do not know whether that with which you are threatened be nigh or whether my Lord will appoint for it a term: