Each entry is the number of all possible matrices of 3 × 3 with 0 or 1, respectively.

Question

Question

This question was previously asked in

Allahabad High Court Group C Official Paper ( Held On : 20 Jan 2019 )

Answer 1

Calculation:

As we know that

Number of possible entries of 3 × 3 = 9

And, every entry has two choices = 0 and 1

Now,

Total number of choices = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2

⇒ 2⁹

⇒ 512

∴ The total number of choices is 512.

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