Digits related problem

The sum of digits of a two digit number is 9.If we interchange the digits, the sum of the new number and original number is always 

• 100
• 90
• 99
• None of these

The sum of digits of a two digit number is 9.If we interchange the digits, the new number is 9 more than the original number.What is the original number ? 

• 45
• 63
• 90
• 54

The sum of digits of a two digit number is 9.If we interchange the digits, the new number is 9 less than the original number.What is the original number ? 

• 45
• 63
• 90
• 54

The sum of digits of a two digit number is 9.If we interchange the digits, the new number is 27 less re than the original number.What is the original number ? 

• 45
• 63
• 81
• 54

The sum of digits of a two digit number is 9.If we interchange the digits, the new number is 27 more re than the original number.What is the original number ? 

• 45
• 63
• 36
• 54

The sum of digits of a two digit number is 9.If we interchange the digits, the new number is 63 more  than the original number.What is the original number ? 

• 81
• 63
• 36
• 18

The sum of digits of a two digit number is 9.If we interchange the digits, the new number is 45 more  than the original number.What is the original number ? 

• 45
• 27
• 36
• 54

The sum of digits of a two digit number is 9.If we interchange the digits, the new number is 45 less than the original number.What is the original number ? 

• 45
• 27
• 36
• 72

The sum of digits of a two digit number is 9.If we interchange the digits, the new number is 63 more  than the original number.What is the original number ? 

• 45
• 27
• 18
• 36

The sum of digits of a two digit number is 9.If we interchange the digits, the new number is 45 less  than the original number.What is the original number ? 

• 45
• 27
• 36
• 72