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Question

Digital root is the single digit number obtained by continuously adding digits of the number till a single digit is obtained. The order of a number is the number of cycles of addition which need to be done on that number to obtain a single digit number. For example: 999 has a digital root = 9 and an order 2.
How many three digit numbers have a digital root = 5?


Your Answer
A
10
Correct Answer
B
100
Your Answer
C
20
Your Answer
D
99

Solution

The correct option is B 100
Option (B) is the correct answer. Check the video for the approach.

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