Mental Math & Arithmetic
Mental Math & Arithmetic

How many zeroes does 100! have?

What is the units Digit of (1! + 2! +...)^33

Probability that cubic of x ends in 11 (1 to 10^12)

Resources

Mental Math:

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https://rankyourbrain.com/mental-math⁠

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http://www.lemo.education/⁠

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https://tradermaths.com/⁠

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https://graduatetrader.com/⁠

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Mental Math & ArithmeticMental Math & Arithmetic