A two digit number ab is added to another number ba, which is obtained by reversing the digits then we get three digit number. Thus (a + b) equals to:

A at least 18
B 2ab
C 2(a + b)
D (a + b) ≥ 10

Correct Answer: (a + b) ≥ 10

When two two digit numbers are added and the resultant value is a three digit number. It means there must be a carry over (i.e. The sum of unit digits be greater than 9. Similarly, the sum of the tens digit is also greater than 9)Required numbers = 64 + 46 = 110Option D is correct
Bissoy MCQ
#Arithmetic Ability #Number System

Related Questions

If the digit in the unit's place of a two-digit number is halved and the digit in the ten's place is doubled, the number thus obtained is equal to the number obtained by interchanging the digits. Which of the following is definitely true ?
A Sum of the digits is a two-digit number
B Digit in the unit's place is half of the digit in the ten's place
C Digit in the unit's place and the ten's place are equal
D Digit in the unit's place is twice the digit in the ten's place
If you add up the digits of a three -digit number you get 18 . The ten's digit is twice the hundred's digit and the hundred's digit is 13 the unit's digit. What is the number?
A 246
B 369
C 531
D 855
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and difference of the digits of the number if the ratio between the digits the number is 1 : 2?
A 4
B 8
C 16
D 24
The different between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of its of that number ?
A 4
B 2
C 10
D 16
The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two-digits of that number?
A 3
B 4
C 6
D 9
The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?
A 3
B 4
C 9
D Cannot be determined
E None of these
A two -digit number is such that the product of the digits is 8. when 18 is added to the number , then the digits are reversed. what is the number?
A 18
B 24
C 42
D 81
A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is:
A 18
B 24
C 42
D 81
In a two digit number, the digit in the unit's place is two more than the three times of the digit in ten's place . If the sum of the tow digits is 6 , the number is -
A 51
B 24
C 15
D 42
The sum of the digits of a two-digit number is 15 and the difference between the digits is 3.What is the two-digit number?
A 69
B 78
C 96
D cannot be determined

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