1-First let’s list the numbers between 210 to 220, except the even ones since they’re a multiple of 2:
211; 213; 215; 217; 219
Let’s remove 213, and 219 because they’re multiples of 3 (2+1+3=6; 2+1+9=12), 215 is multiple of 5, so let’s remove it.
That leave’s is with 211, and 217.
We can remove 217, because it’s a multiple of 7, leaving us with 211.
2- It’s deductive reasoning, because you started with a more general idea.
3- {-7, -6, -5, -4, -3, -2, -1, 0, 1}
4- {x e R, x>=-2}
5-{-1, 0, 1}
6- {x∣-4≤ x ≤6}
7- [-20, ♾ )
8- On a number line, make a circle around -1, and continue the line to minus infinity.
9- On a number line, make a circle on -3, and continue to minus infinity. Make a ring on 0, and continue to infinity.
Definitely the question is incomplete
Using for loop in java to print positive integers ,let say first 50 integers
So the loop is:
int i ;
for( i= 0; i<= 50; i++ ) {
print (i);
}
The looping will going to start from the 1 and stop to 50

Actually Welcome to the Concept of the Congruency,
Question 2.) => since all sides are equal, so SSS is the answer for Q-2
Question 3.) => Two angles and one side, so AAS is the answer for Q-3
1 and 6
16
2,1,and 7
2 and 17
and so on if u get the pattern