What is the highest power of 5 that divides 90 x 80 x 70 x 60 x 50 x 40 x 30 x 20 x 10?
Option 1 : 10 Option 2 : 12 Option 3 : 14 Option 4 : None of these

• (5*18)*(5*16)*(5*14)*(5*12)*(5*5*2)*(5*8)*(5*6)*(5*4)*(5*2)=total number f 5 s=10
• 9 years agoHelpfull: Yes(16) No(0)
• 5*18*5*16*5*14*5*12*5*10=(5*2)*5*8*5*6*5*4*5*2=total number f 5 s=10
  option 1;
• 9 years agoHelpfull: Yes(4) No(0)
• Select the no of 5
  5^10
• 9 years agoHelpfull: Yes(2) No(0)
• U can divide the above product completely only by ten 5s in the denominator. So answer is 10.
• 9 years agoHelpfull: Yes(2) No(0)
• 9*10 *8*10 *7*10 *6*10 *5*10 *4*10 *3*10 *2*10 *10
  so as we have 9 tens clearly we can say we have 9 fives and one more 5 from 50
  so totally 5^10
• 7 years agoHelpfull: Yes(0) No(0)