Answer is E.
Q: What is the hundredths digit of the decimal z?
For example: z = a.bcd
c = ?
(1) The tenths digit of 100z is 2:
100z = a.bcd * 100 = abc.d
The tenths digit of 100z is 2, so d = 2 INSUFF
(2) The units digit of 1,000z is 2.
1000z = a.bcd * 1000 = abcd
The units digit is 1000z of 2, so d = 2 INSUFF
Together (1) and (2) we can not determine the value of c, so INSUFF
Answer is E