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## Comment on

Introduction to Probability## is the solution to the last

1/5 (is the chance that he will be selected first) ,

4/5 x 1/4 = 4/20 = 1/5 (is the chance that he will be selected second) ...

1/5 + 1/5 = 2/5 = 4/10 = 0.4

## That's a perfect approach.

That's a perfect approach. Since this video is an introduction to probability, we don't get into any techniques yet, other than to explain what probability is all about.

## Brent, I've got a hard

"If an integer 'n' is to be chosen at random from the integers 1 to 96, inclusive, what is the probability that n(n+1)(n+2) will be divisible by 8?"

A: 1/4

B: 3/8

C: 1/2

D: 5/8

E: 3/4

OA: D

## This question has been

This question has been discussed many times on the GMAT discussions forums.

You'll find 4 or 5 diverse solutions from experts here: http://www.beatthegmat.com/if-an-integer-n-is-to-be-chosen-at-random-fro...

## Thanks brent, much

## Add a comment