2^{30} + 2^{30} + 2^{30} + 2^{30} =

- a)8
^{120} - b)8
^{30 } - c)2
^{32 } - d)2
^{30 } - e)2
^{26}

Correct answer is 'C'. Can you explain this answer?

Related Test: Problem Solving Practice Quiz - 1

12 Answers

Sandeep Kumar
answered
4 days ago

4Ã—(2^30)=2^2Ã—2^30

= 2^32

* In multiplication if base are equal we can add powers

* In division if base are equal we can subtract the powers

example:

3^5/3^3 = 3^(5-3)= 3^2

= 2^32

* In multiplication if base are equal we can add powers

* In division if base are equal we can subtract the powers

example:

3^5/3^3 = 3^(5-3)= 3^2

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