QUES: The biggest Presbyterian church is the National Presbyterian Church in Mexico (Iglesia Nacional Presbiteriana de Mexico), which has around 2,500,000 members and associates and 3000 congregations, but there are other small denominations like the Associate Reformed Presbyterian Church in Mexico which was founded in 1875 by the Associate Reformed Church in North America. The Independent Presbyterian Church and the Presbyterian Reformed Church in Mexico, the National Conservative Presbyterian Church in Mexico are existing churches in the Reformed tradition.
The National Presbyterian Church had 3000 members and how many congregations?

ANS: unanswerable

QUES: The theory of special relativity finds a convenient formulation in Minkowski spacetime, a mathematical structure that combines three dimensions of space with a single dimension of time. In this formalism, distances in space can be measured by how long light takes to travel that distance, e.g., a light-year is a measure of distance, and a meter is now defined in terms of how far light travels in a certain amount of time. Two events in Minkowski spacetime are separated by an invariant interval, which can be either space-like, light-like, or time-like. Events that have a time-like separation cannot be simultaneous in any frame of reference, there must be a temporal component (and possibly a spatial one) to their separation. Events that have a space-like separation will be simultaneous in some frame of reference, and there is no frame of reference in which they do not have a spatial separation. Different observers may calculate different distances and different time intervals between two events, but the invariant interval between the events is independent of the observer (and his velocity).
What are two events in Minkowski spacetime connected by?

ANS: unanswerable

QUES: In 1945, the first formal women's barbershop organization, Sweet Adelines, was formed. In 1953 Sweet Adelines became an international organization, although it didn't change its name to Sweet Adelines International until 1991. The membership of nearly 25,000 women, all singing in English, includes choruses in most of the fifty United States as well as in Australia, Canada, England, Finland, Germany, Ireland, Japan, New Zealand, Scotland, Sweden, Wales and the Netherlands. Headquartered in Tulsa, Oklahoma, the organization encompasses more than 1,200 registered quartets and 600 choruses.
How many women are members of the Sweet Adelines?

ANS: nearly 25,000

QUES: Copper, silver and gold are in group 11 of the periodic table, and they share certain attributes: they have one s-orbital electron on top of a filled d-electron shell and are characterized by high ductility and electrical conductivity. The filled d-shells in these elements do not contribute much to the interatomic interactions, which are dominated by the s-electrons through metallic bonds. Unlike metals with incomplete d-shells, metallic bonds in copper are lacking a covalent character and are relatively weak. This explains the low hardness and high ductility of single crystals of copper. At the macroscopic scale, introduction of extended defects to the crystal lattice, such as grain boundaries, hinders flow of the material under applied stress, thereby increasing its hardness. For this reason, copper is usually supplied in a fine-grained polycrystalline form, which has greater strength than monocrystalline forms.
How is copper normally supplied?

ANS:
fine-grained polycrystalline form