Answer :
Well
-1 belong to these sets of numbers
-Integers
-Rational numbers
-Real numbers
2.125
-Rational numbers
-Real numbers
pi
Irrational
Real numbers
3 1/4
Rational number
Real numbers
Well
-1 belong to these sets of numbers
-Integers
-Rational numbers
-Real numbers
2.125
-Rational numbers
-Real numbers
pi
Irrational
Real numbers
3 1/4
Rational number
Real numbers