Answer: There are 18 two digit numbers containing 7. Solution: 7 is a unit digit and if we add 10 with it, it results a two digit number 17, just by changing the digit in the tenth place, contains 7. Herein, how many two digits number are there?
The total number of two digit numbers is 90. From 1 to 99 there are 99 numbers, out of which there are 9 one-digit numbers, i.e., 1, 2, 3, 4, 5, 6, 7, 8 and 9. If one digit numbers are subtracted from 99 we get 90 two-digit numbers.
Also Know, how many 6 digit numbers are there in all? 900,000 6
Keeping this in view, how many 2 digit numbers have the digit 3 exactly once?
so 2 digit numbers containing 3 are: 30,31,32,33,34,35,36,37,38,39 =11. 13,23,43,53,63,73,83,93 =8.
How many two digit numbers are there having digit 5 or 6?
Here the possibilities for tens place are 1,2,3,4,5,6,7,8,9( Zero if included will become a single digit number , Therefore excluded ) Hence a total of 9 possibilities . Hence there are 18 two digit numbers containing the number 5 . Thanks for the A2A!
Related Question Answers
What is the smallest 2 digit number?
10
What is the smallest 3 digit number?
100
How many 3 digits number are there?
On the number line the 3 digit numbers are : 100 - 999 So if I would start at 1 - 999 then I have 999 numbers in total. from those I will take away the one digit numbers : 9 and the two digit numbers: 90 I.e: 999-99 = 900 3 digit numbers. How many numbers exactly have 4 digits?
In this situation there are 9,000 four digit numbers. If a four digit number is any string of four characters from 0-9 (so that 0001 and 0000 are four digit numbers) then we can reason as follows. Regardless of what number you chose for the first digit, there are 10 possible choices for the second digit. How many 2 digit combinations are there with 10 numbers?
10 10 = 100 two digit combinations. How many positive 2 digit numbers are there?
1 Answer. We can get 24 only from: 3×8,4×6. Thus, the only possible numbers are: 38,83,46,64. Is 10 a double digit number?
double-digit. A double-digit number is between 10 and 99. Which is the smallest one digit number?
1
How many digits does the number after 99 have?
2 digits
What is the greatest two digit number?
99
What is the number 2 more than the smallest 9 digit number?
The smallest number of nine digits is 100000000. And the required number is therefore 100000000+2=100000002. What is the mean of all 2 digit numbers?
sum of all the numbers = (n/2)*(a + l) = 45 * (99 + 10) = 4905. mean = (sum of all observations) / no.of observations. = 4905 / 90. What is the largest 3 digit number?
999
What is the difference between the smallest and largest 2 digit numbers?
Now to smallest 2 digit number we have 19. Product is 1 X 9 = 9. Difference between them is 27 – 9 = 18. So the difference between largest and smallest 2 digit number is 93 – 19 = 74. What is the smallest 6 digit odd number?
The smallest six digit positive number is 100,000, which is even. If 1 is subtracted or added to any even number we get an odd number, so the smallest positive six-digit odd number is 100,001. The smallest negative six-digit odd number is -999,999. What is the biggest 6 digit number?
999,999
What is the 6 digit smallest number?
The largest six-digit number is 999999, hence, our smallest six-digit number will be -999999. What is the smallest 7 digit number?
1000000
What is a 7 digit number called?
Digit 3 – Hundreds. Digit 4 – Thousands. Digit 5 – Ten Thousands. Digit 6 – Lakhs. Digit 7 – Ten Lakhs / Millions. What is the largest 7 digit number?
8-digit numbers. The largest 7-digit number is 99,99,999. The successor of 99,99,999 = 99,99,999 + 1 = 1,00,00,000. 10000000 is the smallest 8-digit number. 
