Question

What is the value of Zeta in the unit system?
1. 10¹⁵
2. 1018
3. 1021
4. 1024

Answer 1

Correct Answer - Option 3 : 1021

The correct answer is 10²¹.

• Prefixes used in the SI System:

Prefix	Symbol	Exponential
Yotta	Y	1024
Zeta	Z	1021
Exa	E	1018
Peta	P	1015
Tera	T	1012
Giga	G	109
Mega	M	106
Kilo	K	103
Hecto	h	102
Deca	da	101

Prefix	Symbol	Exponential
Yocto	Y	10-24
Zepto	Z	10-21
Atto	E	10-18
Femto	P	10-15
Pico	T	10-12
Nano	G	10-9
Micro	M	10-6
Milli	K	10-3
Centi	h	10-2
Deci	da	10-1