Question

ce numere poțiadauga la produsul numerelor9si1,astfel ca suma sa fie cuprinsaintre31 si36

Answer 1

9x1=9
9+a=32
a=23
 9+23=32 
 
9+a=33
a=33-9
a=24                 
9+24=33
deci nr care pot fi adaugate 23,24,25,26,

Answer 2

9x1=9

9+23=32

9+24=33

9+25=34

9+26=35