Răspuns :
a + b + c + d + e = 25
a) |—|
b) |—| + 2
c) |—| + 2 + 2
d) |—| + 2 + 2 + 2
e) |—| + 2 + 2 + 2 + 2
25 - (2 + 2 + 2 + 2 + 2+ 2 + 2 + 2 + 2 + 2) = 5 =>
5: 5 = 1 (a)
1 + 2 = 3 (b)
3 + 2 = 5 (c)
5 + 2 = 7 (d)
7 + 2 = 9 (e)
=> Numărul mijlociu = b) 5
a) |—|
b) |—| + 2
c) |—| + 2 + 2
d) |—| + 2 + 2 + 2
e) |—| + 2 + 2 + 2 + 2
25 - (2 + 2 + 2 + 2 + 2+ 2 + 2 + 2 + 2 + 2) = 5 =>
5: 5 = 1 (a)
1 + 2 = 3 (b)
3 + 2 = 5 (c)
5 + 2 = 7 (d)
7 + 2 = 9 (e)
=> Numărul mijlociu = b) 5