Let them eat cake

You are making a recipe that consists of 5 different ingredients. In how many different orders can you add the ingredients to the bowl?


The answer is 120.

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16 solutions

Darryl Yeo
Oct 13, 2013

For the first ingredient you put in the bowl, you have 5 5 different choices.

Now we have 4 4 ingredients to put in the bowl. For each of the 5 5 initial situations we have 4 4 choices each of what the second ingredient could be. So now we have 5 × 4 = 20 5 \times 4 = 20 possibilities.

Now we have 3 3 ingredients to put in the bowl. For each of the 20 20 previous situations we have 3 3 choices each of what the third ingredient could be. So now we have 20 × 3 = 60 20 \times 3 = 60 possibilities.

Now we have 2 2 ingredients to put in the bowl. For each of the 60 60 previous situations we have 3 3 choices each of what the third ingredient could be. So now we have 60 × 2 = 120 60 \times 2 = 120 possibilities.

Now we have 1 1 ingredient to put in the bowl. We have no choice but to put it into the bowl. So we still have 120 120 possibilities.

The result is an equation like this: 5 × 4 × 3 × 2 × 1 = 120 5 \times 4 \times 3 \times 2 \times 1 = 120 , or better put, 5 ! = 120 5! = 120 .

Whichever one of these 120 120 orders we choose, let's hope it tastes yummy!

Le answer is le 120

Alexander Dottore - 7 years, 8 months ago
Mashrur Fazla
Oct 14, 2013

There are 5 5 different ingredients.
At first we have 5 5 options to add ingredients.Secondly we have 4 4 options to add ingredients.Thirdly we have 3 3 options to add ingredients.Fourthly we have 2 2 options to add ingredients.At last we have 1 1 option to add ingredient.
So,We can add ingredients ( 5 × 4 × 3 × 2 × 1 5\times 4\times 3\times\ 2\times 1 ) different orders.
SO,The answer is 5 ! 5! = 120 \boxed{120}


we can directly use the formula nPr for this question :(.....

Samarth Agarwal - 7 years, 7 months ago

amazing :)

Pearly Mitnasala - 7 years, 8 months ago

Log in to reply

hmm

Mashrur Fazla - 7 years, 7 months ago
Andhika Rahardian
Oct 13, 2013

The answer is 5 ! 5! = 120 120

Girija Lenka
Oct 17, 2013

the answer is 5! = (5 x 4 x 3 x 2 x 1) = 120

Rajachowdary Raj
Oct 14, 2013

Since,a recipe is constituted with 5 ingredients,1st ingredient can be chosen in 5 different ways,second one in 4 ways,third one in 3 ways,fourth one in 2 ways and last one in a unique way.....thus altogether,5.4.3.2.1=120

Ayon Pal
Oct 14, 2013

There are 5 different ingredients.

So, The number of different orders can add the ingredients to the bowl is 5 ! 5!

or, 5 4 3 2 1 = 120 5 * 4 * 3 * 2 * 1 = 120

That's it!! :-)

Blessius Septian
Dec 14, 2013

5! = 5 x 4 x 3 x 2 x 1

the formula applied in this question is n! <BR>so, the answer is 5! = (5 x 4 x 3 x 2 x 1)= 120

Fajrul Falah
Oct 14, 2013

Many different order of 5 different ingredients is permutation of 5 5

5 ! = 5 × 4 × 3 × 2 × 1 5!=5\times4\times3\times2\times1 5 ! = 120 5!=120

Raiyun Razeen
May 9, 2014

The answer is 5! = 120

Apurv Rajput
Mar 23, 2014

Factorial of 5=120

Daniel Ferreira
Oct 17, 2013

P n = n ! P 5 = 5 ! P 5 = 120 P_n = n! \\\\ P_5 = 5! \\\\ \boxed{P_5 = 120}

Rashmi B K
Oct 17, 2013

Answer is 120

5 ! = 120 5!=120

Aditta Nishad
Oct 15, 2013

5!=120

Sonu Kumar Tiwari
Oct 14, 2013

itis just 5.4.3.2.1=120

Kobe Bryant Pe
Oct 13, 2013

5!

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