Quick Puzzle | Time Limit: 30 Seconds

Found this puzzle on LinkedIn and I think it's a good mental exercise. Not at all difficult to crack, but should give you a good 30 seconds 😀

• 9 = 90
• 8 = 72
• 7 = 56
• 6 = 42
• 3 = ??

If you take more than 30 seconds to crack this, you've gotta be needing some brain exercise. Spend time on CE and keep your brain engaged! Posted in: #Brainy Puzzles

12😉

18 it should be. Or is this a problem that has multiple correct answers based on assumptions or not-enough-data.

12

12 😀
x = x*(x+1)

5 = 30
4 = 20.
3 = 12.
2 = 6.
1 = 2.

(or)

6 = 42
3 = 18 Which one is right???

12

Kaustubh Katdare

😀

• 9 = 90
• 8 = 72
• 7 = 56
• 6 = 42
• 3 = ??

time taken<20sec
ans: 12

ans : 18 (time taken 9 seconds)

explanation-:

9 = 90
8 * 9 = 72
7 * 8 = 56
6 * 7 = 42
3 * 6 = 18

12..

Took like just 2 sec 😛

What is logic for getting 18?

ianoop

What is logic for getting 18?

they must have done by this way :

• 9 = 90
• (8*9=72)
• 8 = 72
• ( 7*8=56)
• 7 = 56
• (6*7=42)
• 6 = 42
• (3*6=18)
• 3 = ??

Shailaja Tiwari

they must have done by this way :

• 9 = 90
• (8*9=72)
• 8 = 72
• ( 7*8=56)
• 7 = 56
• (6*7=42)
• 6 = 42
• (3*6=18)
• 3 = ??

Really this is logic😨 , where did 9=90 came from☕ and why 3 came in series after 6, while other numbers are just x-1.

Why not x = x*(x+1).

9=90 - as 8 is multiplied with its higher consecutive no. 9,similarly they must have added 9 with its higher consecutive no.10.
and don't know about the series problem ,others may not have noticed it

anyway what's the right answer/
😨

Right answer is 18 or 12 depends on ur logic.In objective exams, options must be either 12 or 18 not both.My answer is 12 bcos first match a pattern and then relation between consecutive options.

Ajay Pandey

Right answer is 18 or 12 depends on ur logic.In objective exams, options must be either 12 or 18 not both.My answer is 12 bcos first match a pattern and then relation between consecutive options.

Still not convinced, how some of us getting 18.

8*9=72
7*8=56
6*7=42
3*6=18
by wrong logic ......😀 right answer is 12

Kaustubh Katdare

Found this puzzle on LinkedIn and I think it's a good mental exercise. Not at all difficult to crack, but should give you a good 30 seconds 😀

• 9 = 90
• 8 = 72
• 7 = 56
• 6 = 42
• 3 = ??

If you take more than 30 seconds to crack this, you've gotta be needing some brain exercise. Spend time on CE and keep your brain engaged!

12

write a program to print a message without using printf function.

12

12

12 or 18 based on our assumption....
But i think 12 suits the most....
Took <15 s.....

18

Kaustubh Katdare

Found this puzzle on LinkedIn and I think it's a good mental exercise. Not at all difficult to crack, but should give you a good 30 seconds 😀

• 9 = 90
• 8 = 72
• 7 = 56
• 6 = 42
• 3 = ??

If you take more than 30 seconds to crack this, you've gotta be needing some brain exercise. Spend time on CE and keep your brain engaged!

it should be 12

12

18🎉

Aadit Kapoor

write a program to print a message without using printf function.

At first I thought you must have posted in the wrong thread. But now I think I see that you think the answer 18 is bad logic, a non sequitur, so you posted your own non sequitur to protest. Right?

BTW. The answer to your puzzle is trivial if using one of the many computer languages that don't have a printf function.

Kaustubh Katdare

Found this puzzle on LinkedIn and I think it's a good mental exercise. Not at all difficult to crack, but should give you a good 30 seconds 😀

• 9 = 90
• 8 = 72
• 7 = 56
• 6 = 42
• 3 = ??

If you take more than 30 seconds to crack this, you've gotta be needing some brain exercise. Spend time on CE and keep your brain engaged!

its 18

Well 18 (3-4 seconds). Also, if you (want to) intrapolate the series, the answer comes to 12. There seems to be a confusion as to which one is correct.

If it were up to me , I would justify 18 as the correct answer because of the way the question is presented. I was not "told to" intrapolate.

18!!! 😀

12

a*(a+1) so 12