Three fours and one half of 4
Or if you mean using only fours and operation signs you develop methods like this:
42 - 4 + (4/4) = 13.
In words, four squared (16) take 4 (12), + the sum of 4/4, which is one (13).
Obviously, being an Prime number, 13 doesn't fit equally into four, so use a combination of different mathematical symbols to change four into many other numbers:
42 = 16
Square Root of four = 2
4! (four factorial) = 24
43 = 64
4/4 = 1
4 + 4 = 8
Combinations of these can be used to make the 13 you're after.
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answer is (4! * √4 + 4) \ 4.
(4! * √4 + 4) \ 4.
= (24*2+4) \ 4
= (48+4) \ 4
= 52 \ 4
= 13
Oh, dude, making 13 with four 4s? Easy peasy lemon squeezy! You just do 4 + 4 + 4 + 4 - 4/4. Boom, there you go, 13! Like, math is a piece of cake, right?
4! - 44/4 = 24 - 11 = 13
(4+4)*(4+4)=8*8=64
(44 - 4)/4
To make 15 using only four 4s, we can use basic arithmetic operations such as addition, subtraction, multiplication, and division. One way to achieve this is (4 + 4 + 4) - 4 = 12 - 4 = 8. Another way is (4 x 4) - (4 ÷ 4) = 16 - 1 = 15. In total, there are several ways to make 15 using only four 4s, and it requires creative thinking and manipulation of numbers.
44 divided by .44