UNIT PLACE DIGIT

Consider a three-digit number with the following properties: I. If its digits in units place and tens place are interchanged, the number increases by 36, II. If its digits in units place and hundreds place are interchanged, the number decreases by 198. Now suppose that the digits in tens place and hundreds place are interchanged. Then the number.

What is the value of a two-digit number in which digit at tens place is greater than digit at unit place? A. The sum of the digits is 5. II. The difference of the squares of the digits is 15. C. The difference of their digits is 3.

In a 2 digit number, the units place digit is x. If the sum of digits be 9, then the number is (10x – 9).

On one page of a directory, there are 160 telephone numbers. The frequency distribution of the unit place digit is given below: From this page, one of the numbers is chosen at random. What is the probability that the unit place digit in the chosen number is an odd prime number?

The digit in the tens place of a two digit number is 3 more than the digit in the units place. Let the digit at units place be b. Then the number is

On one page of a telephone directory, there were 200 telephone numbers. The frequency distribution of their unit place digit (for example, in the number 25828573, the unit place digit is 3) is given in Table: Without looking at the page, the pencil is placed on one of the numbers i.e the number it chosen at random. What is the probability that the digit in its unit place is 6?

I the digit in the unit’s place of a two digit number is halved and the digit in ten’s place is doubled the number thus obtained is equal to the number obtained by interchanging the digits. Which of the following definitely true? a. Sum of the digits is as two digit number. b. Digit in the unit’s place is half of the digit in the tens place. c. Digit in the unit’s place and the ten’s place are equal. d. Digit in the units’ place is twice the digit in the ten’s place.

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.

On one page of a telephone directory, there were 200 telephone numbers. The frequency distribution of their unit place digit (for example, in the number 25828573, the unit place digit is 3) is given in the table below: Digit 0 1 2 3 4 5 6 7 8 9 Frequency 22 26 22 22 20 10 14 28 16 20 A number is chosen at random, find the probability that the digit at its unit’s place is: (i) 6 (ii) a non-zero multiple of 3 (iii) a non-zero even number (iv) an odd number.