 • Welcome in Math School.
• This is beta verion of our website.
##### -2 + 3! - 1 =...? ___________________________________________

```    3
```
##### Explanation

Many of you not familiar with the sign(1). In above question sign (!) is called fictorial sign. The symbol (!) is like a exclamation mark! This symbol (!) in Mathematics means factorial. Simply it can be solve as 3! = 3 x 2 x 1 =6 and if 5! Then its solution is 5 x 4 x 3 x 2 x 1 = 120.

This is BODMAS/ PEMDAS related question and there is a problem in BODMAS or PEMDAS that factorial sign is not covered in it. So the question arrise where (which order) we should solve the fictorials in BODMAS. For this read read our article

• Where we should solve the factorial(!) in BODAMS ? • ```Now let us we solve the question.

-2 + 3! -1   Solve the fictorial sign
(i.e 3!= 3.2.1=6)

= -2 + 6 - 1   Arrange the number +ve and -ve number

= 6 - 2 - 1

= 6 - 3

= 3
```

___________________________________________

##### BODMAS Short Questions

###### What is BODMAS?

______________________

###### What is order of operation?

______________________

###### Who invented BODMAS?

______________________

###### Solve 3 - 3 × 2 ÷ 6 = ?

______________________

##### BODMAS Questions

###### What is square root of 25?

______________________

###### Solve 10 ÷ 4 of 5 =...?

______________________

###### Solve 2 / 2 - 2 + 2 × 2 =...?

______________________

###### Solve 10-4×0+3÷3 =..?

______________________

###### Solve 7+7÷7+7×7-7 =...?

______________________

###### Solve 3 + 5% =...?

______________________

###### Solve 2e × 100% =...?

______________________

###### If √(0.04)(0.4)a = (0.4)(0.04)√b then a/b ... ?

______________________

###### Solve 5 × (1/5) ÷ (1/5) ÷ (1/5) × 5 =...?

______________________

###### 3 ÷ (5 ÷ 7) = (3 ÷ 5) ÷ 7

______________________

###### Solve 4 - 2 ÷ (1/2) + 3 =...?

______________________

###### Solve 2 - 2 × 2 - 2 ÷ 2 =...?

______________________

###### Solve 3 - 3 × 3 - 3 ÷ 3 =...?

______________________

###### Solve 4 + 4 × 4 - 4 ÷ 4 =...?

______________________

###### Solve -1 + 2 × 0! =...?

______________________

###### Solve -2 + 3! - 1 =...?

______________________

###### Which step is wrong?

______________________

##### 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

##### Worksheets (Solved)

###### Integration     