Question

Cho a = 2¹² . 5^{8 .} Số chữ số của a là

Answer 1

a = 1 600 000 000 => Số chữ số của a là 10 số

Answer 2

a=2^12.5^8=2^4.2^8.5^8=16.(2.5)^8=16.10^8>10^9(16>10)

Có:16.10^8<100.10^8=10^2.10^8=10^10

=>10^9<a<10^10.

Vậy a có 10 chữ số

Answer 3

10

Tik cho mk nha..................cảm ơn rất nhiều

Answer 4

10

Tik cho mk nha..................cảm ơn rất nhiều

Answer 5

a = \(2^{12}\cdot5^8\)

a= \(2^4\cdot2^8\cdot5^8\)

a = \(2^4\cdot\left(2\cdot5\right)^8\)

a = \(2^4\cdot10^8\)

a = 1600000000

Answer 6

Có 10 chữ số 

Answer 7

9⁹9⁹⁹9^{999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999}