Permutations N Combinations -the basics
The number of ways that 2 boys and 3 girls stand in a line such that the boys are next to each other is ?
I considered the 5 people 4 and I did 4! but then I multiplied by 2 because it could be b1 infront of b2 and vice versa
Is that correct ? How can I use a formula to solve this ?
I considered the 5 people 4 and I did 4! but then I multiplied by 2 because it could be b1 infront of b2 and vice versa
Is that correct ? How can I use a formula to solve this ?
That sounds reasonable to me - for combinatorics, there’s often not a single formula because the specifics of the question, so you have to reason it out like you’ve done here
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