The question was usually a mathematical equation, but could sometimes be about historical events or general knowledge.

Europe cannot be built upon mathematical equations, but on political trust.

A lot of little mathematical equations to spell out life for you.

"There were mathematical equations showing that it must be true."

They are typically expressed in terms of a single mathematical equation.

Such mathematical equations, she added, are not part of agency procedure.

They were having him work very hard on the mathematical equations for that area.

Together, they could have been a mathematical equation for opposites.

Over time, the web of mathematical equations grew more elaborate.

Solving all the necessary mathematical equations on paper is next to impossible.