Question

In a two digit number the units place digit is x. If the sum of digits be 9 , then the number is (10x-9) whether it is true or false true or false

Answer 1

Answer:

it is false because

Step-by-step explanation:

let unit place digit be x

and the tenth place digit be y.

sum of digits:

x+y=9

Answer 2

It is false.

The two digit number is 9(10-x).

Explanation:

Given : x= unit's place in a two digit number

Let  y= ten's digit in the number.

Then the representation of two digit number = 10y+x   (i)

If the sum of digits be 9 , then x+y=9

Then, y= 9-x

Put this value in (i ) , we get

Two digit number =10(9-x)+x

= 90-10x+x

= 90-9x

= 9(10-x) ≠ (10x-9)

Hence, the given statement is false.

# Learn more :

Plzz solve this two question

1. The units digit of a two-digit number is 3 and seven times the sum of the digits is the

number itself. Find the number.

2. In a two-digit number, the digit at the units place is double the digit in the tens place. The number

exceeds the sum of its digits by 18. Find the number.

A wo digit number is 3 more than 4 times the sum of its digits If is is added to the​

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