• GMAT Test: Crazy Math Problem – Solved!

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So I got this crazy math problem from a GMATPill student who was using ManhattanGMAT material and didn’t quite understand their explanations. (It’s OK ManhattanGMAT–nobody’s perfect).

Well, here’s the video that I sent back to my student.

Step 1) Notice that the numbers are EVEN and are SQUARES.

Step 2) Notice that the question is not asking for x. Rather, it is asking for some weird expression—SQUARED.

Step 3) Identify that it might make sense to re-write the equation with squares so they better match up with what we’re trying to solve for.

Step 4) Recognize that the squares now cancel out, leaving us with 4^(2x) = 40

Step 5) Recognize that the question is asking us something that looks different–but we can rewrite it so that it includes the term that we already found in step #4.

Step 6) Do the division and arrive at 2.5 –TADA!!

Other GMAT Prep Questions:

Verbal Questions: Sentence Correction | Critical Reasoning | Reading Comprehension
Quant Videos: Problem Solving | Data Sufficiency

9 responses to “GMAT Test: Crazy Math Problem – Solved!”

1. Roselyn

hey this is what i need, i was looking for it.

2. alley

hi this is working for me exactly the same way i saw it on the gmat website other

3. rocky

so funny it looks! but it also is explained in a good manner

4. leena

i hate maths but this was a bit interesting

5. pablo

whoa, don't think i would've gotten that from the get-go

6. mathdummy