1
Question
How many three digit numbers have a digital root of 8 with an order 1?
How many three digit numbers have a digital root of 8 with an order 1?
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Solution
The correct option is B 36
Question is A+B+C=8, where A>0. So, question changes to A+B+C=7.
Using 1-0 method, answer is based on the arrangement of 7 zeroes and 2 ones =9C2=36
Question is A+B+C=8, where A>0. So, question changes to A+B+C=7.
Using 1-0 method, answer is based on the arrangement of 7 zeroes and 2 ones =9C2=36
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