Find my number, if a third of it is equal to a fifth of 10.

Timed*** there are 8 rows and 8 columns, or 64 squares on a chessboard. suppose you place 1 penny on row 1 column a, 2 pennies on row 1 column b, 4 pennies on row 1 column c, and so on … how many pennies are on each square? a =   b =   c = d =   e =   f = g =   h =

Sorry guys but as you have a small brain

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola