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similar to the 4x4 puzzle

similar to the 4x4 puzzle

Posers and Puzzles

c
Standard membercrazyblue

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express the number 24 by the following four numbers using only * / + -

a) 10, 10, 4, 4 (easy)
b) 7, 7, 3, 3 (medium)
c) 8, 8, 3, 3 (not so easy)

anyone has similar puzzles to this?

edit: oh and every number has to be used seperatly...cant use "38" or so in c).

d
Standard memberdoodinthemood

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Originally posted by crazyblue
express the number 24 by the following four numbers using only * / + -

a) 10, 10, 4, 4 (easy)
b) 7, 7, 3, 3 (medium)
c) 8, 8, 3, 3 (not so easy)

anyone has similar puzzles to this?

edit: oh and every number has to be used seperatly...cant use "38" or so in c).
a - 10+10+4+4
b - 7x3 +3
c - 8x3

Try 7, 7, 7, 7, 7, 7 to make 777

c
Standard membercrazyblue

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Originally posted by doodinthemood
a - 10+10+4+4
b - 7x3 +3
c - 8x3

Try 7, 7, 7, 7, 7, 7 to make 777
erm, i didnt mention (because i thought its clear) that of course you have to use ALL numbers. 🙂
in b) one 7 is misssing, in c) 8 and 3 are missing.

and about a)....add the numbers again. is it really 24? 😉

M
Standard memberMephisto2

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a) [(10 x 10) - 4] / 4

d
Standard memberdoodinthemood

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Oooh you really caught me out. I'm pretty drowsy this morning. Still, try the 6 sevens one 🙂

M
Standard memberMephisto2

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b) [(3/7) + 3] x 7

c
Standard membercrazyblue

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well done. but it seems, nobody can solve c)

oh and about the 7's. is it 777 + (7-7)*7. that would be a bit too easy i guess?!

d
Standard memberdoodinthemood

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no using 77 or 777

c
Standard membercrazyblue

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(7*7+7)*(7+7)-7 🙂

d
Standard memberdoodinthemood

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my god you're good.

D
Standard memberDeepRed

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Originally posted by crazyblue
(7*7+7)*(7+7)-7 🙂
392.
Myself and Excel says so, at least, so...

c
Standard membercrazyblue

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Originally posted by DeepRed
392.
Myself and Excel says so, at least, so...
(7*7+7)*(7+7)-7...

= (49+7)*(14)-7
= (56)*(14)-7
= 784-7
= 777

D
Standard memberDeepRed

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Originally posted by crazyblue
(7*7+7)*(7+7)-7...

= (49+7)*(14)-7
= (56)*(14)-7
= 784-7
= 777
Two ways of interpreting it.
I thought you meant that 56 * (14-7) was 777.
Sorry.

A
Standard memberAlaskan

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To answer the original question, C) is 8/(3-8/3)

M
Standard memberMephisto2

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Originally posted by Alaskan
To answer the original question, C) is 8/(3-8/3)
You get my applause for that one.

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