### Brain Teasers

# What Time?

Chris was worried about a math test coming up, so he asked his teacher if he could stay after school so she could help him study. She said 'yes' and gave him a note, but to his surprise, it said:

2^6*5^2

What time did the teacher mean?

2^6*5^2

What time did the teacher mean?

### Answer

2^6*5^2 is 1600. 1600 would be 16:00, which in military time is 4:00 PM.Chris walked into his teacher's room at 4:00 after school.

"How did you know to come at this time?" his teacher asked.

"Well, I just did the math," said Chris, "and that's the prime factorization of 1600, and 16:00 is military time for 4:00."

"You know all you need to," said the teacher.

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