Five.
Thousand trillion = 1,000,000,000,000,000 which has 15 zeros in it
A Thousand digit number will have 999 zeros
Three zeros... 39000
A thousand has three zeros... 1,000
15,000. Thousands have three zeros at the end, so you would simply add three zeros to fifteen for 15,000.
* Usually it means a thousand thousand billion. That is to say, a 1 followed by fifteen zeros.* (Dated usage, notably British) A million trillion or a 1 followed by 21 zeros. http://freefactfinder.com/definition/Quadrilion.html
2 zeros
Five.
There are 3 zeros in a thousand. 100 = one hundred 1000 = one thousand
Ten thousand has four zeros. (10,000).
Thousand trillion = 1,000,000,000,000,000 which has 15 zeros in it
2 zeros
three zeros
A Thousand digit number will have 999 zeros
FifteeN
Ten zeros.