Asked by Abb
In the following decimal,how many 2's are there in all before the hundredth 3?
0.23223222322223
0.23223222322223
Answers
Answered by
Steve
the nth group of digits has n 2's and 1 3
1+2+...+100 = 100(101)/2 = 5050 2's
1+2+...+100 = 100(101)/2 = 5050 2's
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