There are four 2-digit prime numbers that have 4 as one of their digits: 41, 43, 47, and 49. However, 49 is not a Prime number because it is divisible by 7. So, the correct answer is three 2-digit prime numbers with 4 as one of their digits.
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Well, isn't that a happy little question! Let's think about it together. There are four 2-digit prime numbers that have the digit 4 in them: 41, 43, 47, and 49. Just like painting a beautiful landscape, sometimes all we need is a little patience and a gentle touch to find the answer.
Well honey, there are only two 2-digit prime numbers that have 4 as one of their digits: 41 and 43. So if you're looking for more, tough luck, there ain't any. You can thank me later for keeping it short and sweet.
Oh, dude, you're hitting me with the math questions now? Alright, let me think... So, there's 41 and 43, but those are the only two 2-digit prime numbers with 4 as one of their digits. So, like, yeah, just those two.
Three
They are ;- 41,43, & 47
Any number ending is '4' is NOT a prime number, because it is an EVEn number, divisible by '2'.
There are 5460 five digit numbers with a digit sum of 22.
There is no simple formula for that; I suggest you look up the prime numbers in a table of prime numbers, analyzing each prime number in the range 10-99 whether it fulfills this specific criterion.
There are 60480 numbers.
To find the even two-digit numbers where the sum of the digits is 5, we need to consider the possible combinations of digits. The digits that sum up to 5 are (1,4) and (2,3). For the numbers to be even, the units digit must be 4, so the possible numbers are 14 and 34. Therefore, there are 2 even two-digit numbers where the sum of the digits is 5.
There are 5760 such numbers.