How many prime factors in 25^10 * 36^10 * 20^10 ? Select the correct option: A) 90 B) 80 C) 70 D) 60 E) 50
25^10 * 36^10 * 20^10   =(5*5)^10 * (2*2*3*3)^10 * (2*2*5)^10   =(5^10 * 5^10) * (2^10 * 2^10 * 3^10 * 3^10) * (2^10 * 2^10 * 5^10)   =5^30 * 2^40 * 3^20   number of distinct prime factors = 3   number of prime factors = 30+40+20= 
<gadget id="calculator">30+40+20</gadget>
<output>90</output>
90 90NSWER:90
<result>A</result>
How many prime factors in 25^10 * 36^10 * 20^10 ?