Ancestors

Written by Gemma 👽 on 2025-01-01 at 09:23

A silly #newYear #maths puzzle: express whole numbers using the digits of the year, 2025 edition. I eked out 38, but gave up at 39. :blobcat_wonder:

Solutions to 1-38 in replies.

Let me know if you come up with 39.

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Toot

Written by Gemma 👽 on 2025-01-01 at 09:23

0 = 2 * 0 * 2 * 5

1 = 2 ^ (0 * 2 * 5)

2 = 20 / 2 / 5

3 = 2 + 2 - 5 ^ 0

4 = 2 + 2 - 5 * 0

5 = 2 * 0 * 2 + 5

6 = 2 ^ (0 * 2) + 5

7 = 2 * 0 + 2 + 5

8 = 2 ^ 0 + 2 + 5

9 = 2 + 0 + 2 + 5

10 = 2 ^ 0 * 2 * 5

11 = 2 ^ 0 + 2 * 5

12 = 2 + 0 + 2 * 5

13 = 20 - 2 - 5

14 = (2 + 0) * (2 + 5)

15 = (2 ^ 0 + 2) * 5

16 = 2 ^ (5 - ((0*2)!))

17 = 20 - (-2 + 5)

18 = 22 - (5 - 0!)

19 = 25 - (2+0!)!

20 = (2 + 0) * 2 * 5

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Descendants

Written by Gemma 👽 on 2025-01-01 at 09:24

21 = 22 - 5 ^ 0

22 = 22 + 0 * 5

23 = 20 + (-2 + 5)

24 = -2 ^ 0 + 25

25 = 2 * 0 + 25

26 = 2 ^ 0 + 25

27 = 2 + 0 + 25

28 = 2 + 0! + 25

29 = -2 - 0! + 2 ^ 5

30 = 20 + 2 * 5

31 = -(2 ^ 0) + 2 ^ 5

32 = 2 * 0 + 2 ^ 5

33 = (2 ^ 0) + 2 ^ 5

34 = 2 + 0 + 2 ^ 5

35 = 2 + 0! + 2 ^ 5

36 = (2 + (0 * 5)!)! ^ 2

37 = (5 - 2)! ^ 2 + 0!

38 = (2 ^ 5) + ((0! + 2)!)

39 = ????

40 = 5! / (2 * 2 - 0!)

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Written by Steffi the Redhead on 2025-01-21 at 16:51

@prettyhuman looks interesting. I try to add some numbers

41 = 20,52 or 205,2

44 = 220÷5

45 = 20*2+5

50 = 252+0 or 202,5

51 = 52+2^0

52 = 52*2^0

53 = 52+2^0

54 = 52 +2 +0

58 = 5!÷2−2+0

59 = 5!÷2−2^0

101 = 20,2*5

110 = 22*5+0

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