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CUET
General Test
Numerical Ability
Ratios
If $(x+y): (x-y)=7: 3$, then find the ratio of $(x^2+ y^2): (x^2-y^2)$.
21 : 29
29 : 21
3 : 4
4 : 3
The correct answer is Option (2) → 29 : 21