In the last blogpost I challenged all you number-heads with this sum:
Add, subtract, multiply or divide the following six numbers 2 7 25 50 75 100 to get 265.
You notice that it contains all the big numbers and two small.
In an update I hinted that 5 was a key number in the solution.
It's also worth noting that 265 = 250 + 15.
Now watch the solution:
265 = (50 x 25 + 75) / (7 - 2) = ((50 x 25) / 5) + (75 / 5) = 250 + 15
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Tuesday, November 25, 2014
Sunday, November 23, 2014
NumberWiz Sum: 265 with large numbers
Time for another NumberWiz sum. I might make an update with a tip later, because not a lot of people will find it easy.
Add, subtract, multiply or divide the following six numbers 2 7 25 50 75 100 to get 265.
Send an email or answer in a comment if you like.
Update: A key number in this sum is 5.
Add, subtract, multiply or divide the following six numbers 2 7 25 50 75 100 to get 265.
Send an email or answer in a comment if you like.
Update: A key number in this sum is 5.
Tuesday, November 11, 2014
NumberWiz Sum 474: Solution
The problem was:
Add, subtract, multiply or divide the following six numbers 2 4 6 9 75 100 to get 474.
In an update I hinted that 474 is divisible by 6, hence a solution is:
474 = 6 x 79 = 6 x (75 + 4)
Another solution: 474 = 4 x 100 + (75 + 2 + 6 - 9)
Add, subtract, multiply or divide the following six numbers 2 4 6 9 75 100 to get 474.
In an update I hinted that 474 is divisible by 6, hence a solution is:
474 = 6 x 79 = 6 x (75 + 4)
Another solution: 474 = 4 x 100 + (75 + 2 + 6 - 9)
Saturday, November 8, 2014
NumberWiz Sum 474
Here's a nice sum:
Add, subtract, multiply or divide the following six numbers 2 4 6 9 75 100 to get 474.
Send an email or answer in a comment if you like.
Update:
474 is divisible by 2, of course, and what's more, 474 / 2 = 237 is divisible by 3.
That's a good help.
Add, subtract, multiply or divide the following six numbers 2 4 6 9 75 100 to get 474.
Send an email or answer in a comment if you like.
Update:
474 is divisible by 2, of course, and what's more, 474 / 2 = 237 is divisible by 3.
That's a good help.
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