Post your question in the Comment section below, and we’ll answer it as fast as humanly possible.

- Video Course
- Video Course Overview - READ FIRST
- General GRE Info and Strategies - 7 videos (all free)
- Quantitative Comparison - 7 videos (all free)
- Arithmetic - 42 videos (some free)
- Powers and Roots - 43 videos (some free)
- Algebra and Equation Solving - 78 videos (some free)
- Word Problems - 54 videos (some free)
- Geometry - 48 videos (some free)
- Integer Properties - 34 videos (some free)
- Statistics - 28 videos (some free)
- Counting - 27 videos (some free)
- Probability - 25 videos (some free)
- Data Interpretation - 24 videos (some free)
- Analytical Writing - 9 videos (all free)
- Sentence Equivalence - 39 videos (all free)
- Text Completion - 51 videos (some free)
- Reading Comprehension - 16 videos (some free)

- Study Guide
- Your Instructor
- Office Hours
- Extras
- Prices

## Comment on

The Fundamental Counting Principle## Thank you. very helpful.

## Good point about electric

Good point about electric cars not having standard transmission!

## This is the same diagram we

## Very interesting!

Very interesting!

## Source: Princeton review

Sandy has a husband and 2 children. She takes at

least 1 member of her family to a diner for lunch

every day. The diner offers 10 lunch specials. If no

one orders the same thing, how many different orders

can Sandy's family make for lunch?

Correct answer choices are 45, 90 and 720

I tried to solve this through the fundamental counting principle. I got 90 and 720 correct by multiplying 10*9 and 10*9*8. I wonder how the question reaches the 45 answer? I understand this can be solved through a combination formula, but I would like to solve it through fundamental counting. Can you help?

## This is a VERY poorly-worded

This is a VERY poorly-worded question.

To begin, what constitutes ONE "lunch order"?

For example, if Sandy orders pasta and her husband orders steak, is that considered different from Sandy ordering steak and her husband ordering pasta? Or is it just considered ONE order of steak and pasta?

The answer choice of 45 suggests that it's considered ONE order of steak and pasta.

However, the answer choice of 720 suggests that this is NOT considered one order (with 3 people).

I suggest that you ignore this question.

Cheers,

Brent

## https://greprepclub.com/forum

why didnt we consider ones digit?

## Question link: https:/

Question link: https://greprepclub.com/forum/gre-math-challenge-9-a-palindrome-is-a-num...

Good question! I didn't explain myself very well.

In order for the resulting integer to be a palindrome, the units digit must be the SAME as the hundreds digit.

I've edited my response accordingly: https://greprepclub.com/forum/gre-math-challenge-9-a-palindrome-is-a-num...

Cheers,

Brent

## Add a comment