0
$\begingroup$

This question already has an answer here:

I have been given 24 hours to solve this.

So, my friend has given me 10 examples.

$$1024 = 1$$

$$1000 = 3$$

$$2880 = 5$$

$$6591 = 2$$

$$2113 = 0$$

$$1345 = 0$$

$$1987 = 3$$

$$8888 = 8$$

$$5632 = 1$$

$$6124 = 1$$

So, the question is

$$ 2456=?$$

$\endgroup$

marked as duplicate by Deusovi Aug 28 '16 at 9:42

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • $\begingroup$ Okk, I didn't know that this was already posted beforehand... I would delete it. Sorry for any inconvenience.. $\endgroup$ – Sid Aug 28 '16 at 9:48
  • $\begingroup$ No need to delete it. Nothing wrong with leaving a dupe here. $\endgroup$ – user58 Aug 28 '16 at 9:49
  • $\begingroup$ You could now ask your friend to solve a variation of a similar puzzle I posted :) $\endgroup$ – Jonathan Allan Aug 28 '16 at 13:51
  • $\begingroup$ @JonathanAllan Yeah... maybe I should give him a month time for that.. $\endgroup$ – Sid Aug 28 '16 at 14:14
3
$\begingroup$

The answer is:

1

Reason:

the result is the number of round holes in the digits.

0 - one hole, 1 - zero holes, 2 - zero holes, 3 - zero holes, 4 - zero, 5 - zero, 6 - one hole, 7 - zero, 8 - two holes, 9 - one hole.

$\endgroup$

Not the answer you're looking for? Browse other questions tagged or ask your own question.