Since its Sunday i thought i would continue with a couple more mind challenges.
There are 100 building along a street. A sign is ordered to number the building from 1 to 100. how many "9's" will he need?
What must you do to make the following equation true? 81x9=801
If two ducks are swimming in front of another duck, two duck are swimmig behind another duck, and one duck is swimming between two other ducks, what is the minimum number of ducks?
and one last one for this beautiful sunday afternoon.
What has more value, one pound of $10 gold coind or half pound of $20 gold coins?
I will check back in a little while and post the answers in the comments section. Good luck.
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