Here are 5 more things you should know.

## 01. How to tell if a number is divisible by another number

**Obvious:**

1 – Always.

2 – If the number is even.

5 – If the number ends in 5 or 0.

10 – If the numbers ends in 0.

**Less Obvious:**

3 – Add all of the digits in the number. If the result is divisible by 3, then so is the original number. (Note that this rule can be repeated with the result if you still don’t know.)

4 – If the last 2 digits of the number are divisible by 4, then so is the entire number. If you don’t know then halve the last 2 digits twice. If you still have a whole number then it is divisible by 4.

6 – If the number passes the ‘2’ rule and the ‘3’ rule, then, yes.

8 – If the last 3 digits of the number are divisible by 8, then so is the entire number. If you don’t know then halve the last 3 digits three times. If you still have a whole number then it is divisible by 8.

9 – Add all of the digits in the number. If the result is divisible by 9, then so is the original number. (Note that this rule can be repeated with the result if you still don’t know.)

**Obscure:**

7 – Remove the last digit from the number. Take the number formed by the remaining digits and subtract by 2x the removed digit. If the result is divisible by 7, then so is the original number.

Example (889):

88-(9×2) = 88-18 = 70

=> 889 is divisible by 7.

## 02. You can text 741741 and a crisis counselor will text with you

If you aren’t good with phone calls, you can just text them and they will help you. This service is appropriate for basically any type of crisis. Their trends data shows some of the different types of crises they track. Bullying, eating disorders, depression, family issues, abuse, etc. This is applicable to USA only.

## 03. Crime in the USA has dropped almost every year for 20 years straight

By watching the news you would think crime is at an all time high, but actually the opposite is true. Here are crime statistics from FBI website between 1993 to 2012.

## 04. In the US you can receive compensation if you are an innocent victim of a crime

Basically you may be reimbursed and receive compensation if you are an innocent victim of a crime like being mugged or assaulted. The compensation includes your medical bills, treatment, and meds being paid for. Here is a link to a list of each state’s crime victim services.

Additionally, immigrants who do not have status (or whose permission/visa has expired), who have been victims of a crime (including domestic violence) may be able to get a “U-Visa” to allow them to stay in the country.

## 05. How to use mammalian diving reflex to combat anxiety

All mammals have something called the “mammalian diving reflex” that forces the parasympathetic nervous system (PNS) to kick in, which functions to relax us and calm us down. When in an extremely heightened state of emotional arousal:

· Fill a bowl with icy cold water.

· Bend/lean over.

· Hold your breath.

· Put face in icy cold water for 30 seconds.

· Make sure that area underneath eyes/above cheekbones (most sensitive part of the face) feels the icy water.