Al P. answered • 03/09/18

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N, #people E, # emails

————— -----------

2 1

3 2

4 6

5 10

The pattern is E = (N*(N-1))/2 (this can be proven, but I'll leave that as an exercise)

Plugging in N=14 and you will find

**E=91**

---------

NOTE that I assumed "If each person sends each other person at the office one e-mail on a particular day, unless they've already received an email from that person" based on "… there is only one e-mail between every possible pair."

N, #people E, # emails

————— -----------

2 1

3 2

4 6

5 10

The pattern is E = (N*(N-1))/2 (this can be proven, but I'll leave that as an exercise)

Just plug in N=14 and you will find E=91

---------

NOTE that I assumed "If each person sends each other person at the office one e-mail on a particular day,

**unless they've already received an email from that person**" based on "… there is only one e-mail between every possible pair."

Al P.

03/09/18