*Five newly extracted diamonds were weighed by a diamond mine worker. In his report card he pointed out that diamond A is lighter than diamond B. Diamond C is lighter than diamond D. Diamond B is lighter than diamond D but heavier than diamond E. Which diamond is the heaviest among all of them at the time of extraction?*

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Given information can be summarised as follows
A < B
C < D
E < B < D
From these, D is heavier than B, C and thus heavier than A and E also. Thus diamond D is the heaviest among all of them at the time of extraction.

easy one. ans is d.

D is heaviest

D

D is heaviest

D is the heaviest

Diamond D

Diamond D is the heaviest at time of extraction