Welcome to Adda
Answer
Hi
We have log12900
I am assuming base 10
log12900 = log129*100
= log129+log100 ( log a +log b = log ab)
now log 100 = 2
so we have log 129+2
now log 129 will also be close to 2 since log 1000 =3
so 2+log129 should be approximately 4.1 to 4.15
