17 replies to this topic

[vinoth]

35.35 is the answer..based on the difference between subsequent nums n its reversal appearing to be the difference..

12.1
4.7

7. 4

13.22
12.1

1.12


35.35
13.22

22.13

[abhisk]

Good Puzzle!

Spoiler for Solution

35.35

[akaslickster]

Spoiler for ok, try

5.11

[WOLVERINERT68]

The answer is 35.35

If you wrote the numbers down correctly, then the solution is simply to add each number to itself, only you reverse the numbers on each side of the decimal. For example: 4.7 + 7.4 = 12.1

This would mean the sequence would go like this: 4.7 12.1 13.22 35.35 (which is 13.22 + 22.13).

You're welcome B)

ACTUALLY YOU ARE QUITE WRONG AS 12.1 REVERSED IS 1.21 WHICH 1.21 + 12.1 = 13.31 NOT 13.22 WHICH MAKES THIS ANSWER IMPOSSIBLE. SORRY FOR THE YELLING I AM AT WORK AND NEED TO TYPE IN CAPS. I DO NOT HAVE AN ANSWER MYSELF BUT DID NOTICE THIS ERROR.

[S-In]

a friend sent me this puzzle, and it has me stumped.

what comes next? 4.7 12.1 13.22

thanks for your help!

4.7 + 7.4 = 12.1

12.1 + 1.12 = 13.22

13.22 + 22.13 = 35.35

Simply switch over the numbers from each side of the decimal and add respectively. The answer is 35.35.

[pgreen1911]

It does seem that, in fact, you reverse the numbers for each side of the decimal. So, it would not be 35.35, rather 35.53.

no if it were your way the number after 12.1 would be 13.31
the other guy is right

[woon]

Spoiler for Explanation

I believe the pattern should be A.B x B.A where A and B are a series of number regardless how many digit they have. but not the reverse the number digit by digit.

So I am with the answer of 35.35 too.

[DucktapeFairy]

ACTUALLY YOU ARE QUITE WRONG AS 12.1 REVERSED IS 1.21 WHICH 1.21 + 12.1 = 13.31 NOT 13.22 WHICH MAKES THIS ANSWER IMPOSSIBLE. SORRY FOR THE YELLING I AM AT WORK AND NEED TO TYPE IN CAPS. I DO NOT HAVE AN ANSWER MYSELF BUT DID NOTICE THIS ERROR.

It's not an error. The answer is what it is, it just may be that the wording to the solution is troubling you. The answer is simply that the digits on the left side of the decimal point switch places with the digits on the right side -- without the digits themselves changing position. Therefore, 4.7 + 7.4 = 12.1; 12.1 + 1.12 = 13.22, and 13.22 + 22.13 = 35.35, and 35.35 + 35.35 = 70.70. (Nice that they end up being the same!)


P.S. What kind of job do you have that you can't undo the Caps Lock button? My curiosity is now piqued. :-)