This has been passed around LinkedIn 1000's of times...so many different answers but there is only one correct one.
Could be used to get the brain working at the start of technical courses?
8 = 56
7 = 42
6 = 30
5 = 20
3 = ?
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16 Responses
Missing Number
If 9 = 72 then the answer is 6
3=6
PM
Sent you a PM with right or wrong.
missing number
3?
Nice one
6?
Jenny
Not quite
Sorry, one of you is wrong.
When I say 3, I meant 6.
And I studied maths at university. Dear me…
Let’s put it down to a busy week.
Wrong
But I didn't say which one 😉
Answer
6?
Answer
If 2=2 then 3=6
Missing Number
12 is the next figure in the downward sequence.
Missing Number
Its 6.
6
6 is correct
Multiply number by itself and then subtract the number
Maths Geek
Here' some math geek's response to this popular meme, she's clearly unhappy and apparently quite clever.
http://www.wyzant.com/resources/blogs/239387/sloppy_math_on_facebook_or_who_the_heck_would_write_a_function_like_that_anyway
Answer
6, because it is the multiple of the number below
6 because # * (#-1) = resultant product
8 * 7 = 56
7 * 6 = 42
6 * 5 = 30
5 * 4 = 20
3 * 2 = 6
One general solution
I posted a general solution here . . . https://www.scribd.com/doc/260182194/Elementary-Sequences