What is half of 2 to the power of 20? (Q47)

Solution:

if you dont know operations involving exponents, you will multiply 2 with itself 20 times and you will get 1,048,576

Thus, half of 1,048,576 is 524,288.

If you are familiar with operations involving exponents, you would know that 2 to power of 20 can be expressed as 2 to power of 19×2. Dividing 2 to power of 19 × 2 by 2 results in 2 to power of 19.