Question

A selection of 3 letters from the 8 letters of the word COLLIDER is made.
(i) How many different selections of 3 letters can be made if there is exactly one L?​

Answer 1

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(Hint: Net cost price - C.P. + repairing cost)A selection of 3 letters from the 8 letters of the word COLLIDER is made.

(i) How many different selections of 3 letters can be made if there is exactly one L?click on the picture to see the passage following passage has not been edited there is an error in each of the lines. write the incorrect word and the correct in the space given belowAny gir.l can come if wanna come

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Answer 2

Step-by-step explanation:

So we have the main word COLLIDER

As we are supposed to chose EXACTLY one L,

Let's say we have the main word COLIDER

However it doesn't affect the main context.

Now we have three choices out of which one has to be an L

So we have other two choice from the main word.

This we can chose words in 6×5 ways.

Hence, the total number of choices possible is 30.

Moreover, as the word "DIFFERENT SELECTIONS" is used here, it becomes quite confusing whether to combine or to permute

However my answer is 30.