ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


Math Videos 1247 videos

Compound Interest
45304 Views

Who wants to be a millionaire? In this video, learn about compound interest, interest rates, and the compound interest formula. You'll be buying th...

ACT Math 5.2 Pre-Algebra
1939 Views

ACT Math: Pre-Algebra Drill 5, Problem 2. If a and b are prime numbers, how many factors does ab have?

Simplifying Radicals
9741 Views

We don't like knocking people down to size, but we do like simplifying radicals. Join us?

See All

ACT Math 5.2 Pre-Algebra 1939 Views


Share It!


Description:

ACT Math: Pre-Algebra Drill 5, Problem 2. If a and b are prime numbers, how many factors does ab have?

Language:
English Language

Transcript

00:03

Can't we all just shmoop along?

00:06

If a and b are prime numbers, how many factors does ab have?

00:10

And here are the potential answers...

00:15

This is less of a problem and more... theory. Well... theory shmeory.

00:20

To solve these problems, we can just plug in real numbers and see what happens.

00:24

So like... let's say a is 2 and b is 3... both prime numbers.

00:31

a times b is 6, which has 4 factors: 1 and 6, but also 2 and 3.

00:36

So there are... 4.

00:38

We could try the same with a few other pairs of prime numbers, but we're always going

00:41

to arrive at the same answer.

00:43

Which is what makes math so lovely.

00:45

Answer D.

00:46

As in, "Dazzling good looks."

Related Videos

ACT Math 3.1 Plane Geometry
2559 Views

ACT Math: Plane Geometry Drill 3, Problem 1. What is the area of the trapezoid shape in the video?

Inequalities in Number Lines
3229 Views

ACT Math: Coordinate Geometry Drill 1, Problem 1. Which inequality is expressed by the number line?

ACT Math 3.1 Intermediate Algebra
1955 Views

ACT Math: Intermediate Algebra: Drill 3, Problem 1. Find the fifth number in the series.

ACT Math 2.2 Pre-Algebra
421 Views

ACT Math Pre-Algebra: Drill 2, Problem 2. Solve for y.

ACT Math 2.5 Pre-Algebra
425 Views

ACT Math Pre-Algebra Drill 2, Problem 5. Given the chart in the video, what is the mode?