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WAEC Computer Studies 2022 Paper

Question : 21

Total: 51

2*6+2/4*2*4^2

Solution:

Concept:

Use operator precedence: exponents first, then multiplication/division from left to right, and finally addition.

Explanation:

Start with the expression:

2*6 + \frac{2}{4}*2*4^2

Evaluate the exponent first.

4^2 = 16

The expression becomes:

2*6 + \frac{2}{4}*2*16

Perform multiplication and division from left to right.

2*6 = 12

And

\frac{2}{4}*2*16 = 0.5*2*16 = 16

Finally add the results.

12 + 16 = 28

Answer:

Option C. 28.

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