Question

Forwarded

1) If the sum of digits of a two-digit number is greater than 9, then the product of the digits of the number will always be greater than​

Answer 1

Answer:

Let the unit digit be y and tens digit be x

Number formed = 10x + y

Reverse number = 10y + x

x + y = 9 (Given)…………………………eq1

10y + x = 10x + y + 27…………………….eq2

9y - 9x = 27

y - x = 3……………………………………..eq3

Solving eq1 and eq3 ,we get

x = 3 and y = 6

Original Number = 36 Reversed Number = 63

You can crosscheck the answer by putting up the values obtained either in eq1 or eq2 or eq 3

Answer 2

Answer:

always greater than 9

Step-by-step explanation:

example, if

• 7 + 2 = 9 , 7 × 2 = 14
• 6 + 3 =9 , 6 × 3 = 18
• 5 + 4 = 9 , 5 × 4 = 20
• exception : 8 + 1 = 9 , 8 × 1 = 8