How many digits are there in the integer 8^7 × 25^12? Choose the correct choice from the following answers:
A) 27	B) 24	C) 21	D) 19	E) 15
8^7 × 25^12   This can be simplified to   2^21 × 5^24 (since 2^3 = 8 and 5^2 = 25)   Now 2 x 5 =10   So, simplifying further   (2^21 × 5^21) x 5^3   = 10^21 x 5^3   = 125 x 10^21   10^21 has 1 one and 21 zeros which when multiplied with 125 gives 125 followed by 21 zeros   So, in total, 24 digits   Correct Option: 24
<result>B</result>
How many digits are there in the integer 8^7 × 25^12?