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

___________________________________________

Answer

    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            

___________________________________________

Note

ORDER OF OPERATION ([{(-)}], ()^2 √ , ÷, ×, +, -)

What is the correct answer of 6/2(2+1)=? (1 or 9)

How MATHEMATICIANS explain answer of 6/2(2+1)=? (1 or 9)

Why the answer of 6/2(2+1) should be 9

What is the denominator in 6/2(2+1)=? (2, (2+1), 2(2+1), Any other)

What is BODMAS? Why we use it?

What is PEMDAS? What is different between PEMDAS and BODMAS?

What is difference between BODMAS, BEDMAS, BIDMAS, PEDMAS and PEMDAS?

Who invented the BODMAS? When BODMAS was introduced?

Where we should solve the factorial(!) in BODMAS ?

When percentage(%), logarithms and trigonometric involve in BODAMS. How we solve it?

Why PEMDAS create confusions?

BODMAS Short Questions

BODMAS Questions

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

SHORTCUT TRICKS (Prime Number)

Find the prime number from 1 to 100 just in 5 second (MATH PRIME NUMBER SHORTCUT TRICK from 1 to 100 number) ?

Find a large number "A" is prime number or not (MATH PRIME NUMBER SHORTCUT TRICK By using Square Root method) ?

Find the composite number from 1 to 100 just in 5 second (MATH COMPOSITE NUMBER SHORTCUT TRICK from 1 to 100 number) ?

SHORTCUT TRICKS (Prime Number)

Find the prime number from 1 to 100 just in 5 second (MATH PRIME NUMBER SHORTCUT TRICK from 1 to 100 number) ?

Find a large number "A" is prime number or not (MATH PRIME NUMBER SHORTCUT TRICK By using Square Root method) ?

Find the composite number from 1 to 100 just in 5 second (MATH COMPOSITE NUMBER SHORTCUT TRICK from 1 to 100 number) ?

Worksheets (Solved)

Matrix Logarithm

Trigonometric Identities

Application of Trigonometry

Integration