iCharts Discussions

[rainbow]

How long would you take to solve this?


|---+----+----+------+------|
| 2 | 3 | 4 | 15 | 12 |
|---+----+----+------+------|
| 3 | 4 | 5 | 28 | 20 |
|---+----+----+------+------|
| 4 | 5 | 6 | 45 | 30 |
|---+----+----+------+------|
| 5 | 6 | 7 | 66 | 42 |
|---+----+----+------+------|
| 6 | 7 | 8 | ? | 56 |
|---+----+----+------+------|


Cheers
Rainbow

[Dabangg]

|---+----+----+------+------|
| 2 | 3 | 4 | 15 | 12 |
|---+----+----+------+------|
| 3 | 4 | 5 | 28 | 20 |
|---+----+----+------+------|
| 4 | 5 | 6 | 45 | 30 |
|---+----+----+------+------|
| 5 | 6 | 7 | 66 | 42 |
|---+----+----+------+------|
| 6 | 7 | 8 | 91 | 56 |
|---+----+----+------+------|

[aromal]

[amolmails]

took 40 sec 91

[Shahii]

Easy one...

|---+----+----+------+------|
| 2 | 3 | 4 | 15 | 12 |
|---+----+----+------+------|
| 3 | 4 | 5 | 28 | 20 |
|---+----+----+------+------|
| 4 | 5 | 6 | 45 | 30 |
|---+----+----+------+------|
| 5 | 6 | 7 | 66 | 42 |
|---+----+----+------+------|
| 6 | 7 | 8 | ? | 56 |
|---+----+----+------+------|

1st row 12 + 3*1 = 15
2nd row 20 + 4*2 = 28
3rd row 30 + 5*3 = 45
4th row 42 + 6*4 = 66
5th row 56 + 7*5 = 91 Ans...

[vinay28]

Shaii, one doesn't need the number in the last column (i.e. the last number in each row) to solve it.

1+2*(3+4)
1+3*(4+5)
1+4*(5+6)
1+5*(6+7)
1+6*(7+=91

[hemzbond]

[rainbow]

Yes, 91 is correct. and Shahii and Vinay have even provided the logic (via different routes) to arrive at it. nice fun!

btw, here is the spreadsheet that was password protected, with the answer from this puzzle as the key


and for some time now, owing to other commitments, this might be the last week on icharts for me. but then its a small world and the Internet makes it even smaller

Enjoy the weekend, have fun, and take care all!

Cheers
DJ