Question

13 Cum te pricepi să descoperi regula de formare a unui şir?
a) 40, 51, 62,
c) 0, 4, 8, 12,
b). 85 80 75
d). 27. 21. 15. 9​

Answer 1

a)+11     40+11=51 , 51+11=62

b)+4      0+4=4, 4+4=8, 8+4=12

c)-5       85-5=80, 80-5=75

d)-6       27-6=21, 21-6=15, 15-6=9

Answer 2

Răspuns:

a) 40, 51, 62, 73, 84, 95 ( adaugam numarul 11)

b) 0, 4, 8, 12, 16, 20, 24 ( adaugam numarul 4)

c) 85, 80, 75, 70, 65, 60 ( scadem numarul 5)

d) 27, 21, 15, 9​, 3 ( scadem numarul 6)