Question

len wants to write the number 100000 using a base of 10 and an exponent what number should he use as the exponent

Answer 1

there is 5 zeros in 100000, therefore the exponent of the base 10 is 5.

Answer 2

Hey mate, here is your answer.

100000 can be written as ${10}^{5}$
where the base is 10 and the exponent is 5.

Hope it helps you.