Select all the inrational numbers from the list

A. √16

B. √7

C. 823.1

D. - 9

E. 8. 070070007 ...

B is one.

A < C and D are rational

Im thinking about E. It looks like a recurring decimal at first sight but I think its irrational.

The square root of 16 = 4, therefore it is not an irrational number.

The square root of 7 = 2.64575131106 ... therefore it is an irrational number.

823.1 ends at 1, therefore it is not an irrational number.

-9 does not continue forever, therefore it is not an irrational number.

8.070070007 ... continues on forever, therefore it is an irrational number.

Thus, the irrational numbers here are: √7 and 8.070070007 ...