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If , then what is the value of ?

This question was previously asked in
SSC CGL 2022 Tier-I Official Paper (Held On : 01 Dec 2022 Shift 3)
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  1. 24
  2. 18
  3. 20
  4. 29

Answer (Detailed Solution Below)

Option 3 : 20
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Detailed Solution

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Given:

Concept used:

(a + b)3 = a3 + b3 + 3ab(a + b)

Calculation:

⇒ 

⇒ 

⇒ 

⇒ 

⇒ 

⇒  = 20

∴ The required answer is 20.

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