a number is amazing is adding the sum of the digits and product of the digits gives the same interseting number how many numbers from 10 to 20 are amazing ?
Answers
Answer:
1
Step-by-step explanation:
19 is only such number between 10 and 20
Answer:
None
Step-by-step explanation:
Let the number is 10x + y,
Where, x and y are any numbers digits of the number,
According to the question,
10x + y is amazing if,
x + y = xy,
Since, the numbers from 10 to 20 are amazing are,
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
Number x y x + y xy
10 1 0 1 0
11 1 1 2 1
12 1 2 3 2
13 1 3 4 3
14 1 4 5 4
15 1 5 6 5
16 1 6 7 6
17 1 7 8 7
18 1 8 9 8
19 1 9 10 9
20 2 0 2 0
Hence, by the above table it is clear that,
There is no number from 10 to 20 for which the sum of its digit is equal to their product.