Problems on Numbers Questions and Answers

The difference between a two-digit number and the number obtined by interchanging the digits is 27. What is the difference between the digits of the number ?

In a two-digit number , the sum of the digits is 15.if 9 is added to tthe number, the digits are reversed. the number is :

A certain number f two digits is three times the sum of its digits and if 45 be added to it, the digits arereversed. The number is:

Two numbers are such that the ratio between them is 4:7. If each is increased by 4, the ratio becomes 3:5. the larger number is :

The difference between the digits of a two - digit number is 4. What is the digit in unit's place ? To find out the answer, which of the informations given in the statements P and Q is/are sufficient. P: The difference between the number and the number obtained by interchanging the positions of the digits is 36. Q:The sum of the digitsof that number is 12.

The denominator of a fraction is 3 more tha the numerator. If 4 is added to both the numertor and the denominator, the fraction becomes 4/5. the fraction is :

A fraction becomes 5/2 when 3 is added to both the numerator and the denominator and it becomes 4 when 1 is subtracted from both the numerator and denominator. The numerator of the given fraction is :

The sum of the numerator and denominator of a fraction is 11. If 1 is added to the numerator and 2 is subtrated from the denominator, it becomes 2/3. the fraction is :

The sum of the digits of  a two-digit number is 9 less than the number which of the following digits is at unit place of the number ?

On dividing 50 into two parts such that the sum of their reciprocas is 1/12, we get the parts as :