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- Video Course
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- General GMAT Strategies - 7 videos (free)
- Data Sufficiency - 16 videos (free)
- Arithmetic - 38 videos
- Powers and Roots - 36 videos
- Algebra and Equation Solving - 73 videos
- Word Problems - 48 videos
- Geometry - 42 videos
- Integer Properties - 38 videos
- Statistics - 20 videos
- Counting - 27 videos
- Probability - 23 videos
- Analytical Writing Assessment - 5 videos (free)
- Reading Comprehension - 10 videos (free)
- Critical Reasoning - 38 videos
- Sentence Correction - 70 videos
- Integrated Reasoning - 17 videos

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## Comment on

Powers of 8## Can you not subtract the 3 in

## In order to apply the

In order to apply the Quotient Law (which is covered here https://www.gmatprepnow.com/module/gmat-powers-and-roots/video/1025) the two bases must be equal.

For example, (5^7)/(5^3) = 5^4

In the given expression, the top power has a base of 8^4, and the bottom power has a 8^3, since 8 x 8^2 = 8^3

Since the bases aren't equal, we can't apply the Quotient Law.

## Can you guys please tell me

## You bet.

You bet.

Green: Easy question (difficulty level: 350 to 500)

Yellow: Medium question (difficulty level: 500 to 650)

Red: Difficult question (difficulty level: 650 to 800)

## Hi, I'm sorry but where are

## On each module page (e.g.,

On each module page (e.g., https://www.gmatprepnow.com/module/gmat-powers-and-roots), you'll see a colored box for each video question. The box is next to the PLAY button.

## Oh awesome thanks! Is there

## I don't have the same system

I don't have the same system for the video questions. However, all of the linked questions (e.g., https://www.gmatprepnow.com/module/gmat-critical-reasoning/video/1136) are categorized by difficulty level.

## I am just lot by the title

Or is it that you decided to name the problem as such

## Yes, the exponent rules

Yes, the exponent rules needed for this question apply to all bases (not just 8).

I just needed a title for the question to distinguish it from other questions :-)

## I first got this question

## This video covers that

This video covers that concept/law: https://www.gmatprepnow.com/module/gmat-powers-and-roots/video/1029

To practice, you can answer the questions in the Reinforcement Activities area.

## Add a comment