F. p ≤ 49.5
G. p ≥ -4.5
H. p ≤ -4.5
J. p ≥ 49.5

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

The length of triangle base is 26. a line, which is parallel to the base divides the triangle into two equal area parts. find the length of the segment between triangle legs.

Sum of the interior angles of a pentagon