Question

Descopera regula si completeaza fiecare sir cu numerele care lipsesc. a)800800,400400,200200,?,?; b)5505,6010,6515,?,?; c)?,30,900,27000,?; d)?,750000,500000,250000,?.

Answer 1

a)800800,400400,200200,100100    (Impartit la 2)
b)5505,6010,6515,7020             (Plus 505)
c)1,30,900,27000,81000     (Inmultit cu 30) 
d)1000000,750000,500000,250000,0      (Minus 250000) 

Answer 2

a)800800,400400,200200,100100,50050.
b)5505,6010,6515,7020,7520.
c)1,30,900,27000,81000.
d)1000000,750000,500000,250000,0.