Question:

3 digit number of the beginning of 2²⁰⁰² x 5²⁰⁰⁵ _is...

Discussion:

Still remember with aⁿ x a^m = a^n+m and aⁿ x bⁿ = abⁿ ?

Should you need to remember back as we will apply them in this matter.

Ø 2²⁰⁰² x 5²⁰⁰⁵

Ø 2²⁰⁰² x 5²⁰⁰² x 5³

Ø 10²⁰⁰² x 5³

Ø 10²⁰⁰² x 125

Multiplication of 5³ with 10²⁰⁰² will give the effect of adding digits zero (0) behind 125.

So the number of 3 digits initial 2²⁰⁰² x 5²⁰⁰⁵ is 1 + 2+ 5 = 8