A train has one engine and 6 train cars. Find the tot oak number of ways an engineer can arrange the train. (The engine must be first)

the answer is 24

step-by-step explanation:

step-by-step explanation:

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option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,