The vertices of quadrilateral
lie on the graph of y = lnx and
the x−coordinates of these vertices
are consecutive positive integer
. The area of the quadrilateral
is ln (((91)/(90))). what is the x−coordinate
of the leftmost vertex
A team of 8 couples, (husband and wife)
attend a lucky draw in which 4 persons
picked up for a prize. Then the probability
that there is at least one couple is