The product of all the prime numbers less than 22 is closest to which of the following powers of 10?	Choose the correct choice from the following:
A) 10^9 B) 10^8 C) 1*10^7 D) 10^6 E) 10^5
Quickly approximate   2, 3, 5, 7, 11, 13, 17, 19   =2.1x10^2*1.3*1.7*1.9   =9.69* 10^6   =1*10^7   1*10^7
<result>C</result>
The product of all the prime numbers less than 22 is closest to which of the following powers of 10?