The word(s) "think" appears 49 time(s) in 48 verse(s) in Quran in Muhammad Pickthal translation.

(21) A day when He will call you and ye will answer with His praise, and ye will think that ye have tarried but a little while.

(22) And he went into his garden, while he (thus) wronged himself. He said: I think not that all this will ever perish.

(23) I think not that the Hour will ever come, and if indeed I am brought back unto my Lord I surely shall find better than this as a resort.

(24) And (bethink you of) the Day when we remove the hills and ye see the earth emerging, and We gather them together so as to leave not one of them behind.

(25) Whoso is wont to think (through envy) that Allah will not give him (Muhammad) victory in the world and the Hereafter (and is enraged at the thought of his victory), let him stretch a rope up to the roof (of his dwelling), and let him hang himself. Then let him see whether his strategy dispelleth that whereat he rageth!.

(26) think they that in the wealth and sons wherewith We provide them

(27) Why did not the believers, men and women, when ye heard it, think good of their own own folk, and say: It is a manifest untruth?

(28) think not that the disbelievers can escape in the land. Fire will be their home - a hapless journey's end!

(29) And those who look not for a meeting with Us say: Why are angels not sent down unto us and (Why) do we not see our Lord! Assuredly they think too highly of themselves and are scornful with great pride.

(30) And when (his son) was old enough to walk with him, (Abraham) said: O my dear son, I have seen in a dream that I must sacrifice thee. So look, what thinkest thou? He said: O my father! Do that which thou art commanded. Allah willing, thou shalt find me of the steadfast.