Countdown continued

GTTDI GOD wrote: »

7 * (4 + 3) * (8 + 6 - 5) = 441

4, 6, 7, 8, 9, 10
375

(10*6)+8+7=75*(9-4)=375

2 2 4 5 6 10

337

GTTDI GOD

wally79 wrote: »

2 2 4 5 6 10

337

5 * 6 + 4 = 34 * 10 - 2 = 338

1, 3, 5, 5, 8, 10
527

GTTDI GOD wrote: »

5 * 6 + 4 = 34 * 10 - 2 = 338

1, 3, 5, 5, 8, 10
527

8*(5+1)=48+5=53*10=530-3=527

100 4 5 5 9 1
633

Wanderer2010 wrote: »

8*(5+1)=48+5=53*10=530-3=527

100 4 5 5 9 1
633

(100+4)*(5+1)=624+9=633

1 2 4 5 7 8

369

Notoldorwise

wally79 wrote: »

(100+4)*(5+1)=624+9=633

1 2 4 5 7 8

369

(5*8)+1=41*(7+2)=369

2 3 5 7 8 25

831

Notoldorwise wrote: »

(5*8)+1=41*(7+2)=369

2 3 5 7 8 25

831

(8*5)-7=33*25=825+(3*2)=831

7 5 9 10 1 4
729

brophya2007

Wanderer2010 wrote: »

7 5 9 10 1 4
729

(7+1)*9*10=720
720+4+5 = 729

9 1 3 4 5 25

622

brophya2007 wrote: »

(7+1)*9*10=720
720+4+5 = 729

9 1 3 4 5 25

622

(4+1)*5*25=625-3=622

3 3 5 6 7 10

653

wally79 wrote: »

(4+1)*5*25=625-3=622

3 3 5 6 7 10

653

(6+5)*(3+3) = 66*10 =660-7 = 653

75 10 1 2 4 6
557

Wanderer2010 wrote: »

(6+5)*(3+3) = 66*10 =660-7 = 653

75 10 1 2 4 6
557

75+10+(4*2)=93*6=558-1=557

4 4 6 7 8 50

367

wally79 wrote: »

75+10+(4*2)=93*6=558-1=557

4 4 6 7 8 50

367

6-(4/4)=5
(50-5)*8=360+7=367

25 9 2 4 6 7
813

Wanderer2010 wrote: »

6-(4/4)=5
(50-5)*8=360+7=367

25 9 2 4 6 7
813

25*4=100-7-2=91*9=819-6=813

3 4 5 7 9 25

664

wally79 wrote: »

25*4=100-7-2=91*9=819-6=813

3 4 5 7 9 25

664

25*3*9=675-7-4=664

8 5 1 9 2 7
543

Wanderer2010 wrote: »

25*3*9=675-7-4=664

8 5 1 9 2 7
543

(7*9)+5=68*8=544-1=543

2 3 6 7 8 25

444

Clauric

wally79 wrote: »

(7*9)+5=68*8=544-1=543

2 3 6 7 8 25

444

7 + 8 + 3 = 18
18 * 25 = 450
450 - 6 = 444

QED

Numbers:
1, 3, 5, 5, 7, 9

Target:
852

Clauric wrote: »

7 + 8 + 3 = 18
18 * 25 = 450
450 - 6 = 444

QED

Numbers:
1, 3, 5, 5, 7, 9

Target:
852

9+3=12
7*(5+5)=70+1=71
12*71=852

6 8 1 3 9 8
793

Wanderer2010 wrote: »

6 8 1 3 9 8
793

(8 + 3 ( * 8 = 88 *9 = 792 +1 = 793

=======================

2, 4, 5, 8, 9, 50

Target: 652

Niska wrote: »

(8 + 3 ( * 8 = 88 *9 = 792 +1 = 793

=======================

2, 4, 5, 8, 9, 50

Target: 652

(9+4)*50=650+2=652

50 7 4 9 1 3
622

Wanderer2010 wrote: »

50 7 4 9 1 3
622

50 + 7 + (4 * 3) [12] = 69 *9 = 621 + 1 = 622

===============
Aside, quick-tip: If there is a 9 in the problem:

A number is divisible by 9 if the sum of it's digits is divisible by 9. If the sum is not divisible by 9, you can still use the sum to see how far away the target is from 9.

Eg: 622 -> 6 +2 +2 = 10 - not divisible by 9, but just 1 away. So we know 622 -1 is divisible by 9. So 622 -1 = 621. 6 + 2 +1 = 9. (621 / 9 = 69)

Ex2 - 754 -> 7 +5 +4 = 16 (Not divisible, but 2 away from 18 which is) so 754 + 2 = 756 (7 + 5+ 6 = 18, divisible by 9. 756 / 9 = 84)
===============

2,5, 9, 25, 50, 100

target: 725

Niska wrote: »

50 + 7 + (4 * 3) [12] = 69 *9 = 621 + 1 = 622

===============
Aside, quick-tip: If there is a 9 in the problem:

A number is divisible by 9 if the sum of it's digits is divisible by 9. If the sum is not divisible by 9, you can still use the sum to see how far away the target is from 9.

Eg: 622 -> 6 +2 +2 = 10 - not divisible by 9, but just 1 away. So we know 622 -1 is divisible by 9. So 622 -1 = 621. 6 + 2 +1 = 9. (621 / 9 = 69)

Ex2 - 754 -> 7 +5 +4 = 16 (Not divisible, but 2 away from 18 which is) so 754 + 2 = 756 (7 + 5+ 6 = 18, divisible by 9. 756 / 9 = 84)
===============

2,5, 9, 25, 50, 100

target: 725

Thanks for the tip, you are after speeding up this thread!

(50÷2)+(9-5)=29*25=725

8 6 2 2 10 7
503

Wanderer2010 wrote: »

8 6 2 2 10 7
503

No 9!

(6 * 10) = 2 = 62 *8 = 496 +7 = 503

=====================

2,6,6, 8, 10, 50

target: 922

Niska wrote: »

No 9!

(6 * 10) = 2 = 62 *8 = 496 +7 = 503

=====================

2,6,6, 8, 10, 50

target: 922

50+(6*8)-6=92*10=920+2=922

3 3 5 6 9 25

711

wally79 wrote: »

50+(6*8)-6=92*10=920+2=922

3 3 5 6 9 25

711

25*3=75
6-(5-3)=4
(75+4)*9=711

8 7 2 4 6 7
754

GTTDI GOD

Niska wrote: »

===============
Aside, quick-tip: If there is a 9 in the problem:

A number is divisible by 9 if the sum of it's digits is divisible by 9. If the sum is not divisible by 9, you can still use the sum to see how far away the target is from 9.

Eg: 622 -> 6 +2 +2 = 10 - not divisible by 9, but just 1 away. So we know 622 -1 is divisible by 9. So 622 -1 = 621. 6 + 2 +1 = 9. (621 / 9 = 69)

Ex2 - 754 -> 7 +5 +4 = 16 (Not divisible, but 2 away from 18 which is) so 754 + 2 = 756 (7 + 5+ 6 = 18, divisible by 9. 756 / 9 = 84)
===============

It also works for 3 and 6, if the sum is even then it is divisible by 6, the more you know!

Wanderer2010 wrote: »

8 7 2 4 6 7
754

(8 +6) * 4 = 56 +2 = 58 * (6 + 7)[13] = 754

============================

3, 5, 5, 7, 8, 10

Target: 478

Niska wrote: »

(8 +6) * 4 = 56 +2 = 58 * (6 + 7)[13] = 754

============================

3, 5, 5, 7, 8, 10

Target: 478

Hard luck on my puzzle. Im afraid I only had a single 6 in it. Here is another way around it:

7*8=56+2 = 58*(7+6) =754

Your puzzle:

8*5 = 40+7 = 47*10 = 470+5+3 = 478

100 8 5 4 4 1
657

Wanderer2010 wrote: »

Hard luck on my puzzle. Im afraid I only had a single 6 in it. Here is another way around it:

7*8=56+2 = 58*(7+6) =754

Bit of a brain fart there - sorry.

Wanderer2010 wrote: »

100 8 5 4 4 1
657

100 + (8 * 4) = 132 * 5 = 660 - 4 + 1 = 657

======================

6, 7, 9, 10, 50, 100

Target: 589

Niska wrote: »

Bit of a brain fart there - sorry.

100 + (8 * 4) = 132 * 5 = 660 - 4 + 1 = 657

======================

6, 7, 9, 10, 50, 100

Target: 589

6*100=600
7-(50/10)=2+9=11
600-11=589

25 6 3 7 5 4
661

Ciaran

Wanderer2010 wrote: »

6*100=600
7-(50/10)=2+9=11
600-11=589

25 6 3 7 5 4
661

(4*25-6)*7 + 3 = 661

2 4 6 8 9 75
684