To obtain the sum of successive odd digits, count the number of odd digits and square this number. The example 1+3+5+7+9+11 has 6 digits, and squaring this number yields the sum of the digits, which is 6×6=36
This is easy: 1+3=4 1+3+5=9 1+3+5+7=16 1+3+5+7+9=25
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Author: David
I grew up near Clayton, AL and have lived over 30 years near Atlanta, GA. My interests include family, church, guitar, gardening, working with kids... and math! Life can be very interesting.
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chasingtrees.net
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