Brain teaser (5) - Page 1

Pedigree Database

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by Ibrahim on 20 February 2010 - 19:02

Can you find out the missing number ?



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



Bhall

by Bhall on 20 February 2010 - 19:02

91


Bhall

by Bhall on 20 February 2010 - 19:02

OOPS!!!!  91

by Ibrahim on 20 February 2010 - 19:02

Sorry but no, try again

by Ibrahim on 20 February 2010 - 19:02

Yes 91, was it that easy !!!!!!!!!!, you did not give me time to enjoy it

Bhall

by Bhall on 20 February 2010 - 19:02

I was talking on the phone  while I was trying.  That does not work out sometimes.  Thank you that was fun

by Ibrahim on 20 February 2010 - 19:02

That was fun and you were very fast

Ibrahim

by beetree on 20 February 2010 - 19:02

Oops, I was slower...

?= 91

by Ibrahim on 20 February 2010 - 19:02

91 is correct:

3 X (2+3) = 15
4 X (3+4) = 28
5 X (4+5) = 45
6 X (5+6) = 66
7 X ( 6+7) = 91

by Ibrahim on 20 February 2010 - 19:02

Actually you were fast but Bhall was extremely fast

Ibrahim





 


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