Comments on: Brain exercise: exercising our Frontal and Parietal lobes

By: datasam

datasam — Thu, 28 Aug 2008 23:47:00 +0000

my no-calc guesstimations were:
10,000
5,000
8,000

Bushy Mouse — Sat, 23 Aug 2008 07:20:58 +0000

1 million
30.000
200.000

Aaron — Mon, 24 Mar 2008 05:51:36 +0000

1. 14,000 times heavier

2. 1,300

3. 3,624

Mitch — Sun, 06 Jan 2008 22:33:05 +0000

I said 80000 times as heavier (elephant 2000kg, mouse 25g).

Im australian so i have no idea about those american-based questions.

Tue, 16 Oct 2007 18:18:49 +0000

[...] 40. A few guesstimations like the ones I was asked in McKinsey interviews years ago. [...]

Alvaro — Sat, 23 Sep 2006 01:14:01 +0000

Again, the key here is to try, plan the steps towards the solution, and do the mental calculations.That’s the brain exercise.

Answers:

1. Around 150,000. Elephant: 4,000 kg on average; mouse is 25 grams.

2. Around 350 firefighters on duty on any given day, out of a pool of 1700 firefighting and emergency medical field personnel

3. “There are over 26,000 trees of approximately 175 species in the Park.” More information at http://www.centralparknyc.org/17613/4604933

tiki — Wed, 20 Sep 2006 06:58:57 +0000

1. 8000

2. 650

3. 1500

Tim — Tue, 19 Sep 2006 20:28:52 +0000

maybe

1) 10,000 times (1 ton versus 100 grams)

2) 800 firefighters (80 stations x 10 in each)

3) 5,000 trees