A1 = 3
a2 = 5
d = a2 - a1 = 5 - 3 = 2
a4 = a3+ 2= 7 + 2 = 9
a5 = a4 + 2 = 9 + 2 = 11
√9 = 3, значит √10>3
тогда 3√10 >3*3
3√10>9
ответ 3) 9 и 10
1)16ц1/2-13ц7/9=3ц(9/18-14/18)=2ц 13/18=49/18
2)49/18*18/33=49/33
3)8/33-1/11=8/33-3/33=5/33
4)2,2*5/33=11/5*5/33=11/33=1/3
5)49/33+1/3+2/11=49/33+11/33+6/33=66/33=2