Question: The problem of the direction of time arises directly from two contradictory facts. Firstly, the fundamental physical laws are time-reversal invariant; if a cinematographic film were taken of any process describable by means of the aforementioned laws and then played backwards, it would still portray a physically possible process. Secondly, our experience of time, at the macroscopic level, is not time-reversal invariant. Glasses can fall and break, but shards of glass cannot reassemble and fly up onto tables. We have memories of the past, and none of the future. We feel we can't change the past but can influence the future.
Is there an answer to this question: What laws are time-reversal variant?

Answer: unanswerable


Question: A group is called finite if it has a finite number of elements. The number of elements is called the order of the group. An important class is the symmetric groups SN, the groups of permutations of N letters. For example, the symmetric group on 3 letters S3 is the group consisting of all possible orderings of the three letters ABC, i.e. contains the elements ABC, ACB, ..., up to CBA, in total 6 (or 3 factorial) elements. This class is fundamental insofar as any finite group can be expressed as a subgroup of a symmetric group SN for a suitable integer N (Cayley's theorem). Parallel to the group of symmetries of the square above, S3 can also be interpreted as the group of symmetries of an equilateral triangle.
Is there an answer to this question: What does a finite number of elements include?

Answer: unanswerable


Question: In 2005, Estonia joined the European Union's Nordic Battle Group. It has also shown continued interest in joining the Nordic Council. Whereas in 1992 Russia accounted for 92% of Estonia's international trade, today there is extensive economic interdependence between Estonia and its Nordic neighbours: three quarters of foreign investment in Estonia originates in the Nordic countries (principally Finland and Sweden), to which Estonia sends 42% of its exports (as compared to 6.5% going to Russia, 8.8% to Latvia, and 4.7% to Lithuania). On the other hand, the Estonian political system, its flat rate of income tax, and its non-welfare-state model distinguish it from the Nordic countries and their Nordic model, and indeed from many other European countries.
Is there an answer to this question: What government institution did Estonia continue to show desire in joining?

Answer: the Nordic Council


Question: Encompasses both secular and religious styles, the design and style made by Muslims and their construction of buildings and structures in Islamic culture included the architectural types: the Mosque, the Tomb, the Palace and the Fort. Perhaps the most important expression of Islamic art is architecture, particularly that of the mosque. Through Islamic architecture, effects of varying cultures within Islamic civilization can be illustrated. Generally, the use of Islamic geometric patterns and foliage based arabesques were striking. There was also the use of decorative calligraphy instead of pictures which were haram (forbidden) in mosque architecture. Note that in secular architecture, human and animal representation was indeed present.
Is there an answer to this question: What is the definition of haram?

Answer:
forbidden