All GRE Subject Test: Math Resources
Example Questions
Example Question #11 :Factorials
Evaluate:
Step 1: Writein multiplication form:
Step 2: Multiply Out
Example Question #12 :Factorials
Evaluate:
Step 1: Expand the numerator and denominator:
Step 2: Cross all numbers out that are common to both the numerator and denominator:
We are left with.
The value of
Example Question #13 :Factorials
What is?
Step 1: Recall definition of factorial...
Factorial is a mathematical expression where you multiplyby every number below it until I hit. To find each number, subtractfrom the previous number
Step 2: Write out
Example Question #14 :Factorials
Evaluate:
Step 1: Evaluate
Factorial-Multiply the number in front of the exclamation point by every number below until I hit
Example Question #15 :Factorials
Evaluate:
Step 1: Evaluate each factorial expression separately...
Step 2: Take the evaluation of each expression and apply the operations in the problem:
So, we get
Example Question #16 :Factorials
Evaluate:
Step 1: Apply the power rule (stacked) of exponents..
We get
第二步:评估the exponent...
We get
Step 3: Re-write the base:
Final answer:
Example Question #17 :Factorials
Evaluate:
Step 1: Evaluate the parentheses first
Step 2: Multiply the outside by the final value in Step 1..
Example Question #18 :Factorials
Evaluate:
Step 1: Define Factorial
Factorial is a mathematical expression which you multiply the number in front of the exclamation point by every number below it until you hit 1..
第二步:评估
Example Question #19 :Factorials
Evaluate:
None of the other answers
Evaluate:
Evaluate:
Evaluate:
Example Question #20 :Factorials
Simplify the following expression:
回想一下,!阶乘的数学方法。这意味着we multiply the number by all positive integers less than itself. In other words, this...
Becomes
This is a great job for a calculator, which yields:
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