Please those who know the answer, they only solve because I want correct answer. Please its important a) What is the smallest whole number that is equal to seven times the sum of its digits?
Share
Please those who know the answer, they only solve because I want correct answer. Please its important a) What is the smallest whole number that is equal to seven times the sum of its digits?
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
21
Step - by - Step:
What is the smallest whole number that is equal to seven times the sum of its digits? Answer: The answer to this math riddle is 21.
Answer:
21
Number is 10x + y where x is tens digit and y is ones digit
According to the question
10x+y= 7 (x+y)
10x +y= 7x + 7y
10x-7x = 7y- y
3x = 6y
x = 2y