I would imagine that learning the numbers of Pi up to a certain point, like maybe 1000 numbers, would be the longest math lesson, in a sense. If you go through the basics of math may be you can't feel that any math lesson as longest math lesson in world.
Matt Murray
19.86 - 4.94 math problem = 14.919999999999998
The product is the "sum" of a multiplication math problem.
.. with another math problem.... See if the question is the same or different.
1 divided by 3
worlds longest toenailes
The worlds longest road bridge is in China
solving for pi... as far as we know now, it is infinate.
Hebesberger UT (Rossleithen) has the longest tunnel
Australia.
Answer
The worlds longest river, the Nile, is in Africa
One of the worlds longest rivers that begins with the letter n is the Nile. This river is in Egypt.
the river amazon is the worlds longest river
Amazon.
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