hey ca anyone know the answer the of todays elitmus exam ? the quetion was -how many numbers less than 500 have 24 factors ... i think that was the quetion
option are
1. 0
2. 1
3. 3
4. 4

• 2^2*3*5*7 = 420
  2^3*3^2*5 = 360
  2^5*3*5 = 480
  
  3 numbers within 500 has exactly 24 factors.
• 9 years agoHelpfull: Yes(6) No(0)
• p is prime no
  no of factor --p1^a * p2^b * p3^c..=> (a+1)*(b+1)*(c+1)...
  24*1=24
  12*2=24
  6*4=24
  8*3=24
  none of these full fill which is less than 500 but following.. YES
  6*2*2 (a=5,b=1,c=1)
  4*3*2(a=3,b=2,c=1)
  3*2*2*2(a=3,b=1,c=1,d=1)
• 9 years agoHelpfull: Yes(1) No(0)
• 3
• 9 years agoHelpfull: Yes(0) No(0)
• plz post more ques asked in yesterday elitmus paper
• 9 years agoHelpfull: Yes(0) No(0)
• @vivek how can you assume these no. while in question asked less than 500 how many no have 24 factor .
  and how you find these no please tell me the trick.
• 9 years agoHelpfull: Yes(0) No(0)
• 2^2*3*5*7 = 420
  2^3*3^2*5 = 360
  2^5*3*5 = 480
  
  3 numbers
• 8 years agoHelpfull: Yes(0) No(0)