Question

PLS REZOLVARE COMPLETA ​

Answer 1

3.a)

12 | n-5, 18 | n-5

lcm(12,18) | n-5

2·6·3 | n-5

36 | n-5

n-5=36k

n=36k+5

min pentru k=1 => n=36+5=>n=41

b)

100<36k+5<200

95<36k<195

95/36=2,...<k<195/36=5,...

k=3 sau k=4 sau k=5

n=113 sau n=149 sau n=185

4.a)

AB=CD=2·DP=10cm

b)