Find the highest number where:

1: all digits are different

2: the sum of its digits is a 2digit number whose 2 digits do not appear in the number

Example:

number : 754

7 + 5 + 4 = 16 : 1 and 6 do not appear in 754

- Sun Nov 29, 2015 7:45 pm
- Forum: Uncategorized
- Topic: Number puzzle
- Replies:
**0** - Views:
**565**

Find the highest number where:

1: all digits are different

2: the sum of its digits is a 2digit number whose 2 digits do not appear in the number

Example:

number : 754

7 + 5 + 4 = 16 : 1 and 6 do not appear in 754

1: all digits are different

2: the sum of its digits is a 2digit number whose 2 digits do not appear in the number

Example:

number : 754

7 + 5 + 4 = 16 : 1 and 6 do not appear in 754

- Thu Nov 05, 2015 12:58 am
- Forum: Uncategorized
- Topic: Tick tock!
- Replies:
**2** - Views:
**241**

Thanks Maggie.

I knew the answer...put it up for people to try...

**Spoiler:**

Those 2 sites only discuss the hour,minute.

A better site:

http://puzzling.stackexchange.com/quest ... on-a-clock

I knew the answer...put it up for people to try...

Those 2 sites only discuss the hour,minute.

A better site:

http://puzzling.stackexchange.com/quest ... on-a-clock

- Wed Nov 04, 2015 7:51 pm
- Forum: Uncategorized
- Topic: Tick tock!
- Replies:
**2** - Views:
**241**

From Henry Dudeney to you: In a 12 hours period, starting exactly at 00.00, how often does: 1: the minute hand overlap the hour hand 2: the second hand overlap the hour hand 3: the second hand overlap the minute hand The clock works fine, so no tricks! Advertisement for clock repair shop: "If y...

- Wed Nov 04, 2015 12:50 am
- Forum: Uncategorized
- Topic: 7,7,7,7
- Replies:
**4** - Views:
**273**

Yes, I do. Here's a slightly different kind: Use digits 1,2,3,4,5 once each and in ASCENDING order. Allowed: brackets, concatenation, + - / * ^ ! ; NOTHING else! Here's from 1 to 100: 1: 1^2345 2: 1^23 - 4 + 5 3: 123 - 4! * 5 4: -1^234 + 5 5: 1^234 * 5 6: 1^234 + 5 7: 123 + 4 - 5! 8: (12 * 3 + 4) / ...

- Tue Nov 03, 2015 4:26 am
- Forum: Uncategorized
- Topic: 7,7,7,7
- Replies:
**4** - Views:
**273**

Well, decided to use "squared":

7squared + 7squared - 7/.7 = 88

7squared + 7squared - 7/.7 = 88

- Mon Nov 02, 2015 3:52 pm
- Forum: Intermediate Algebra
- Topic: Writing rational expression in lowest term; help
- Replies:
**3** - Views:
**404**

A few good teachers supplied by Google:

https://www.google.ca/?gws_rd=ssl#q=fac ... +%2B+b%5E3

https://www.google.ca/?gws_rd=ssl#q=fac ... +%2B+b%5E3

- Mon Nov 02, 2015 3:49 pm
- Forum: Forum Rules & Guides
- Topic: Log In
- Replies:
**1** - Views:
**572**

When I log in, I activate "remember me".

WHY is it that I still need to log in every day?

WHY is it that I still need to log in every day?

- Fri Oct 30, 2015 5:08 pm
- Forum: Uncategorized
- Topic: Need a loan?
- Replies:
**0** - Views:
**338**

I found this quite interesting: A loan of $3000 over 24 months is obtained. The rate will be 9% annual compounded monthly for the 1st year, then 12% annual compounded monthly for the 2nd year. What is the required monthly payment over the 24 months? Part 2: a = 3000, u = .09/12, v = .12/12, p = mont...

- Fri Oct 30, 2015 3:17 am
- Forum: Uncategorized
- Topic: 7,7,7,7
- Replies:
**4** - Views:
**273**

Got 93: SUM[SUM(7)] / 7 + SUM(7) + 7

88 seems impossible...

88 seems impossible...

- Mon Oct 19, 2015 2:00 pm
- Forum: Uncategorized
- Topic: 7,7,7,7
- Replies:
**4** - Views:
**273**

Getting four 7's to represent numbers from 1 to 100; got 'em all except these 2: 88 and 93. Using these: + - / + ^ ! repeating, decimal point SQRT, SUM brackets, concatenation SUM means: SUM(n) = sum of numbers from 1 to n. Example: 61 = SUM(7/.7) + SQRT[7 / r7]! (r = repeating: .777777....) Soooooo...