2 Answered Questions for the topic mental math

01/04/18

how to do problem like the following super fast? 99+98+97+96...+2+1/99!

Steps to solve the question please.   99+98+97...+2+1/99 factorial

01/13/17

word problem

You can roll six different numbers with one toss of a number cube. You can roll eleven different numbers with one toss of two number cubes. How many different numbers can you roll with one toss of... more

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