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Option 3 : If both the statements I and II together are needed to answer the question.
Statement I
If you multiply angle X with 45 and then take square root result will be equal to angle Z.
⇒ (X × 45)1/2 = Z
Statement II
Sum of angle in a triangle
⇒ X + Y + Z = 180°
⇒ X + Z = 180° – Y
⇒ X + Z = 180° – 90°
⇒ X + Z = 90°
⇒ X = 90° – Z
Using both the statement
⇒ (90 – Z) × 45 = Z2
⇒ 4050 – 45Z − Z2 = 0
Solving for z
⇒ Z = 45°
∴ Both the statements I and II together are needed to answer the question.
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