Question

Consider the interval [0, ¥). For each numerical value below, is it in the interval or not?

                (Just answer Yes or No)

0/2 _______     – 5³_______       | –2.5 | _______    - 1.8 ´10 ^-3 _______       5 ^–5 _______

            (Yes or No)            (Yes or No)                 (Yes or No)     (Yes or No)           (Yes or No)

Answer 1

Answer :

The interval [ 0 , ∞ ) contains all the real numbers which are greater than or equal to 0.

1) since 0/2 = 0 is in the inerval [ 0 , ∞ )

Answer: Yes

2) - 5³ = - 125 is negative number so - 5³ does not belongs to [ 0 , ∞ )

Answer : No

3) | - 2.5 | = 2.5 is positive real number and is belongs to [ 0 , ∞ )

Answer : No

4) - 1.8 ' 10^-3 is negative real number and is do not belong to [ 0 , ∞ )

Answer : No

5) 5^-5 = 1/5⁵ = 1/3125 is positive real number and is belong to [ 0 , ∞ )

Answer : Yes