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Subjects>Math>Math & Arithmetic

Two digit numbers contain exactly one 4?

Updated: 10/31/2022

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How many 3-digit numbers have exactly two sevens in them?

Leaving out 077, since it is actually a two digit number, the answer is 35.

How many 5 digit numbers have exactly two sevens in them?

Excluding numbers with leading 0s, there are 6804 such numbers.

How many two digit prime numbers are there?

There are 21 two-digit prime numbers.

How many four digit numbers are there which have exactly the same two digits.?

Any pair of digits (not including 0), can be used to generate 14 four-digit numbers. If one of the digits is 0, only seven will start with a non-zero digit.

How many two-digit whole numbers does not contain zero and any number greater than 1?

There is only one such number.

Related questions

How many 5 digit numbers contain exactly two 7 in them?

There are 6804 such numbers.

How many two-digit numbers do not contain the number 9?

There are 90 two digit numbers, 10 through 99. There are 18 two digit numbers containing a 9. They are 19, 29, 39, 49, 59, 69, 79, 89, and 90 through 99. Therefore, there are 72 two digit numbers that do not contain a 9.

How many 3-digit numbers have exactly two sevens in them?

Leaving out 077, since it is actually a two digit number, the answer is 35.

How many 5 digit numbers have exactly two sevens in them?

Excluding numbers with leading 0s, there are 6804 such numbers.

How may two digit-numbers contain the digit 4?

18 positive integers and 36 integers (negative and positive)

How many three digit numbers contain at least two sevens?

27: 077,177,277,377,477,577,677,877,977,717,727,737,747,757,767,777,787,797

How many two digit prime numbers are there?

There are 21 two-digit prime numbers.

How many four digit numbers are there which have exactly the same two digits.?

Any pair of digits (not including 0), can be used to generate 14 four-digit numbers. If one of the digits is 0, only seven will start with a non-zero digit.

What is the least possible sum of two 4-digit numbers?

what is the least possible sum of two 4-digit numbers?what is the least possible sum of two 4-digit numbers?

How many two-digit whole numbers does not contain zero and any number greater than 1?

There is only one such number.

What two numbers represent a binary digit?

The only two numbers that represent a binary digit are 0 and 1

How many two digit whole numbers are increased by 18 when their digits are reversed?

7 two-digit numbers.

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