Breeding of a certain species of insects is incredible everyday the total number of such insects in a closed glass jar is double the number on the previous day. There was just one insect in the jar on 1/2/2007, and the jar was full to the brim with these insects on 28/2/2007. On which date of February was the jar quarter-full?
(a)7
(b)14
(c)26
(d)None of these
Answer
Answer (as printed): C
Explanation
Since the population doubles every day, so it was halffull on 27/2/2007 and quarter-full on 26/2/2007.
Explanation as extracted from the printed page; notation may be imperfect.