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
- Office Hours
- Extras
- Guarantees
- Prices

## Comment on

MISSISSIPPI Rule## I would like to know, how did

How did you do the multiplication?

## Let's do some elimination.

Let's do some elimination.

First, 11! = (11)(10)(9)...(5)(4)(3)(2)(1) and 4! = (4)(3)(2)(1)

So, we have [(11)(10)(9)...(5)(4)(3)(2)(1)]/[(4)(3)(2)(1)(4)(3)(2)(1)(2)(1)]

Cancel out: [(11)(10)(9)...(5)]/[(4)(3)(2)(1)(2)(1)]

The denominator now equals 48, so rewrite it as...

[(11)(10)(9)(8)(7)(6)(5)]/[(6)(8)]

Cancel out to get: (11)(10)(9)(7)(5)

Evaluate: 34,650

## Pls how did you arrive at 20

## 5!/(3!1!1!) = (5)(4)(3)(2)(1)

5!/(3!1!1!) = (5)(4)(3)(2)(1)/(3)(2)(1)(1)(1)

= (5)(4)

= 20

Alternatively,

5!/(3!1!1!) = (5)(4)(3)(2)(1)/(3)(2)(1)(1)(1)

= 120/6

= 20

## Add a comment