HELP PLZ ILL MAKE BRAINLIEST AND GIVE ALOT OF POINTS-
2 answers:
Answer:
<h2><em><u>d</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>-9</u></em><em><u>/</u></em><em><u>13</u></em></h2>Step-by-step explanation:
<em>Given</em><em> </em><em>,</em>
13d + 8 = -1
=> 13d = -1 - 8
=> 13d = -9
<em><u>Hence</u></em><em><u>, </u></em>
<em><u>The</u></em><em><u> </u></em><em><u>value</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>d</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>-9</u></em><em><u>/</u></em><em><u>13</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em>
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The number of permutations of picking 4 pens from the box is 30.
There are six different unique colored pens in a box.
We have to select four pens from the different unique colored pens.
We have to find in how many different orders the four pens can be selected.
<h3>What is a permutation?</h3>A permutation is the number of different arrangements of a set of items in a particular definite order.
The formula used for permutation of n items for r selection is:
Where n! = n(n-1)(n-2)(n-3)..........1 and r! = r(r-1)(r-2)(r-3)........1
We have,
Number of colored pens = 6
n = 6.
Number of pens to be selected = 4
r = 4
Applying the permutation formula.
We get,
=
= 6! / 4!
=(6x5x4x3x2x1 ) / ( 4x3x2x1)
= 6x5
=30
Thus the number of permutations of picking 4 pens from a total of 6 unique colored pens in the box is 30.
Learn more about permutation here:
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