There is more than one way to do it for most numbers, but here is one for each:
11 = 4/.4 + 4/4
12 = 4 x (4 - 4/4)
13 = 4! - 44/4
14 = (4 x 4) - (4 / sqrt(4))
15 = (4 x 4) - 4/4
16 = (4 x 4 x 4) / 4
17 = (4 x 4) + 4/4
18 = (4 x 4) + (4 / sqrt(4))
19 = 4! - 4 - 4/4
20 = 4 * (4 + 4/4)
You can't.
28,29,30,31.
Eight and four.
Yes: four cubic numbers are possible.
5x5x5x3=375
The prime factorization of 375 is (3 \times 5^3). To express 375 as a product of four prime numbers, we can use the primes 3, 5, 5, and 5. Therefore, the four prime numbers that multiply to make 375 are 3, 5, 5, and 5.
9
2 and 17
1,000 + 1,000 + 70 + 7 = 2077
hyp~95# 34 £
3,5,7,8
8 and 12