Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**anna_gg****Member**- Registered: 2012-01-10
- Posts: 113

Get two random numbers between 0 and 1. Subtract the smaller from the bigger. What is the probability that the result is <0.3? Is it greater than the probability to be > or equal to 0.3?

For what number (instead of 0.3) the probability for both cases is the same?

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 94,541

Hi;

Is it greater than the probability to be > or equal to 0.3?

I am not understanding you here, the P(≥.3) = .49

Did you check your post about the towns?

**In mathematics, you don't understand things. You just get used to them.**

**If it ain't broke, fix it until it is.**

Offline

**anna_gg****Member**- Registered: 2012-01-10
- Posts: 113

Correct.

So, to have equal probability for both cases, we have to substitute 0.3 with 1-sqrt(0.50) = 1-0.707 = 0.292

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 94,541

Hi;

Yes to get both equal to 1 / 2 we would need

Have you seen the answer given for,

**In mathematics, you don't understand things. You just get used to them.**

**If it ain't broke, fix it until it is.**

Offline

Pages: **1**