Question

A number of two digits has 3 for its unit digit and the sum of the digits is 1/7 of the number itself. What is the number? ​

Answer 1

Answer:

63

Step-by-step explanation:

let the no. be 10a + b

and sum of digits be a + b

10a + b = 7(a + b)

3a=6b

3a = 18

a =6

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