MathAndMind.com!

Incorrect

Explanation

Sam is Andrew’s brother. Andrew is Stephan’s son. So, Sam is Stephan’s son. Mary is Stephan's mother. So, Sam is Mary’s grandson.

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What does the “19” in “COVID-19” refer to?

There are 19 variants of the virus. The coronavirus was identified in 2019. This is the 19th coronavirus pandemic. There are 19 symptoms.

How Many is “Many,” or What is the Largest Possible Number?

As soon as a child gets to know the difference between “singular” and “plural,” he/she unconsciously wants to find out how many is “many,” or whether there is a number to quantify everything in the Universe.