Anonymous
Anonymous asked in Science & MathematicsMathematics · 1 decade ago

Algebra I - Evaluating. I'm confused... Please help?

1. Evaluate 4!.

A) 4

B) 12

C) 24

2. Evaluate 0! + 1!.

A)0

B)1

C)2

3. Evaluate 5!/3!

A)20

B)60

C)120

4. Evaluate 7!/5! 2!

A)1

B)21

C)42

5. Evaluate P(3, 0).

A) 0

B) 1

C) 6

5 Answers

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  • Pranil
    Lv 7
    1 decade ago
    Favorite Answer

    1. Evaluate 4!.

    = 4 × 3 × 2 × 1

    = 24

    C) 24

    2. Evaluate 0! + 1!.

    = 1 + 1 = 2

    C)2

    3. Evaluate 5!/3!

    = 3! × 4 × 5/3!

    = 20

    A)20

    4. Evaluate 7!/5! 2!

    = 5! × 6 × 7/5! 2!

    = 21

    B)21

    ------

  • Anonymous
    1 decade ago

    In other words, you don't know what a factorial is.

    "4!" is pronounced "Four factorial", and it means 4*3*2*1. In general, n! is the product of all the integers from n down to 1.

    0! however is a special case, and we define 0! as 1. There are reasons for this, which I won't go into right now. So 0! + 1! is 1+1. I'm sure you can take it from there!

    There are also the "permutation" and "combination" functions:

    P(n,k) = n! / (n-k)!

    C(n,k) = n! / [ k! (n-k)! ]

    You should be able to do all of the problems now.

  • norman
    Lv 7
    1 decade ago

    4! = 4*3*2*1 = 24 (c)

    0! = 1

    0!+1! = 2 (c)

    5!/3! = 4 * 5 = 20 (a)

    7!/5!2! = 6 * 7/2 = 21 (b)

    p(3,0) = 1 (b)

  • 1 decade ago

    . Evaluate 4!.= 4x3x2x1 =24

    A) 4

    B) 12

    C) 24...........................................Ans

    2. Evaluate 0! + 1!.=1+1=2

    A)0

    B)1

    C)2............................................Ans

    3. Evaluate 5!/3!= (5x4x3x2x1)/(1x2x3) =5x4=20

    A)20.............................................ans

    B)60

    C)120

    4. Evaluate 7!/5! 2! = (7x6x5x4x3x2x1)/(1x2x3x4x5)(1x2) =7x6/2=21

    A)1

    B)21.......................................Ans

    C)42

    5. Evaluate P(3, 0).= 3P0= 1

    A) 0

    B) 1...............................Ans

    C) 6

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  • 1 decade ago

    for example 4!=1*2*3*4=24

    1.)C

    2.)B

    3.)B

    4.)C

    5.)C?

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