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

You are not logged in.

- Topics: Active | Unanswered

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,020

No, right?

21. Back to normal! 89 + 2 = p25 - 6 = ?

22. p18 - p4 = ?

*Last edited by mathaholic (2014-01-03 17:08:37)*

Mathaholic | 17th most active poster | 681st most recent person to join MIFF | Person | rrr's classmate

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

No is correct for 19 - 20.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,020

For 21: 91.

22. 61 - 7 = 54.

23. Is 2:17 prime?

Mathaholic | 17th most active poster | 681st most recent person to join MIFF | Person | rrr's classmate

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

What is 2:17?

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,020

Logic hint: Convert it to seconds, and then answer is it prime?

Mathaholic | 17th most active poster | 681st most recent person to join MIFF | Person | rrr's classmate

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,020

137 is prime.

Next questions tomorrow

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

Hi mathaholic;

I will be here, same bat time, same bat channel.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,020

I mean in my time.

23 should have been 24, lol.

25. What is 1/4 of p16?

26. How many hours are there in 67 days?

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

mathaholic wrote:

Logic hint: Convert it to seconds, and then answer is it prime?

bobbym does not like Logic

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

I'm not crazy, my mother had me tested.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

Oooga chaga, ooga chaga, ooga ooga chaga...

That is true. Boole was a nut too.

Same bat time, same bat channel.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,020

Sorry bobbym.

Now, what is the answer to the questions?

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

That is a joke. Your questions are fine. The questions have already been answered and I must leave now.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,020

27. What is p14 - p4?

28. What is p29 - 52?

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,020

Okay.

29. What is p19 - p3[sup]2[/sup]?

30. What is the square root of the largest known prime number?

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,020

Unbelievable answer for 30.

31. What is p222 - p199?

32. What is the square root of the above?

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

Hi;

The largest known prime has 17425170 digits. Now is it believable?

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,020

I know that. As in the square root.

33. Square p33.

34. Square p1 6 times.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

The square root will have roughly half as many digits.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline

**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,020

Oh. People not smarter than you may think 2[sup]6[/sup] in 34, or 64. That's good. i said square. Not power right?

35. 5^p2-(p4-p2)

36. 48 + (p20 - p12)

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,946

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

Offline