How many whole numbers between 10 and 200 have exactly two identical digits?

Answer 1

To find the number of whole numbers between 10 and 200 that have exactly two identical digits, we can consider the different cases. Numbers like 11, 22, 33,...99 have two identical digits. There are 9 such numbers. For numbers like 121, 133, 144,...199, we have 9 choices for the repeated digit and 9 choices for the non-repeating digit. This gives us a total of 81 numbers. Therefore, the total number of whole numbers between 10 and 200 with exactly two identical digits is 9 + 81 = 90.

Answer 2

Oh, dude, let me break it down for you. So, we're looking for numbers between 10 and 200 that have exactly two identical digits, right? Well, that's like finding a needle in a haystack, but not really. There are 36 numbers that fit the bill, like 11, 22, 33, all the way up to 199. So, yeah, 36 is the magic number here.

Answer 3

Oh honey, let me break it down for you. The whole numbers between 10 and 200 that have exactly two identical digits are 11, 22, 33, all the way up to 99. So that's a total of 9 numbers. Don't worry, I did the math for you. You're welcome.

Answer 4

27 of them.

11, 22, 33, 44, 55, 66, 77, 88, 99,

100, 101, 121, 122, 131, 133, 141,

144, 151, 155, 161, 166, 171, 177,

181, 188, 191, and 199.

Answer 5

27 numbers between 10 to 200