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### All non prime number are composite-number...?

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```    False
```
##### Explanation

This is an other interesting question. Be carefull about the statement of question "All non prime number are composite-number" Here we have to understand about Prime Number, Composite Number and Non Prime Number

```Prime number
```

A number is greater than 1 is called a prime number, if it has only two factors, 1 and the number itself i.e 2, 3, 5, 7, 11 ... also notice that prime number are start form 2.

```Composite Number
```

"A number that can be divided exactly by numbers other than 1 or itself is called a composite number" i.e 4, 6, 8, 9, 10... notice that 1 is not included in composite number and 2, 3 are in prime number list therefore composite number are starting from 4.

```Non Prime number
```

Non prime numbers are the integers that are not prime numbers, i.e. zero (0), One (1), All Composite numbers All negative integers (-1, -2, -3, -4, ....) are also non prime number.

Therefore all non prime number (specially 0, 1, negative integers etc) are not composite-numbers. And above statement is false.

##### SHORTCUT TRICKS (Division)
• Divisible by 2 Shortcut trick
• Divisible by 3 Shortcut trick
• Divisible by 4 Shortcut trick
• Divisible by 5 Shortcut trick
• Divisible by 6 Shortcut trick
• Divisible by 7 Shortcut trick
• Divisible by 8 Shortcut trick
• Divisible by 9 Shortcut trick
• Divisible by 10 Shortcut trick