Evaluate ${ } _ { n } P _ { r }$

question 55

Multiple Choice

Evaluate ${ } _ { n } P _ { r }$ .? ${}_{40} P _ { 5 }$ ?

• A)2,193,360
• B)658,008
• C)59,280
• D)78,960,960
• E)2,763,633,600

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Definitions:

Working Backward

A problem-solving strategy that starts with the solution and works backward through the problem to figure out how to arrive at the solution.

Backtracking

A problem-solving technique that involves progressively checking and abandoning partial solutions until the right solution is found.

Means-end

A problem-solving strategy that involves breaking down the problem into smaller parts to address the difference between the current state and the desired goal.

Mental Set

is a cognitive bias that involves approaching a problem in a specific way, often influenced by past experiences, even when a different approach might be more effective.