The word(s) "why" appears 62 time(s) in 59 verse(s) in Quran in Muhammad Habib Shakir translation.

(51) If We pleased, We would have made it salty; why do you not then give thanks?

(52) why is it not then that when it (soul) comes up to the throat,

(53) Then why is it not-- if you are not held under authority--

(54) Have you not seen those who are forbidden secret counsels, then they return to what they are forbidden, and they hold secret counsels for sin and revolt and disobedience to the Apostle, and when they come to you they greet you with a greeting with which Allah does not greet you, and they say in themselves: why does not Allah punish us for what we say? Hell is enough for them; they shall enter it, and evil is the resort.

(55) O you who believe! why do you say that which you do not do?

(56) And when Musa said to his people: O my people! why do you give me trouble? And you know indeed that I am Allah's apostle to you; but when they turned aside, Allah made their hearts turn aside, and Allah does not guide the transgressing people.

(57) And spend out of what We have given you before death comes to one of you, so that he should say: My Lord! why didst Thou not respite me to a near term, so that I should have given alms and been of the doers of good deeds?

(58) O Prophet! why do you forbid (yourself) that which Allah has made lawful for you; you seek to please your wives; and Allah is Forgiving, Merciful.

(59) The best of them said: Did I not say to you, why do you not glorify (Allah)?