1– [5 – {2 + (– 5 + 6 – 2) 2}] is equal to :

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1– [5 – {2 + (– 5 + 6 – 2) 2}] is equal to :

1. –4
2. 2
3. 0
4. –2

Correct Option: A

? = 1 – [5 – {2 + (–1)2}]
= 1 – [5 – {2 – 2}]
= 1 – [5 – 0]
= 1 – 5 = – 4