how many ways can 360 be written as product of two numbers.
a) 10
b) 11
c) 12
d) 18

what is short trick for this Q.

• 360 => 2^3 * 3^2 * 5^1 [i.e. a^x * b^y * c^z)
  No. of ways can be written as a prod of 2 no's is
  (x+1)*(y+1)(z+1)/2
  => (3+1)*(2+1)*(1+1)/2
  => 24/2 = 12
  
  Ans : (c) 12
• 10 years agoHelpfull: Yes(47) No(1)
• Total 12
  1*360, 2*180, 3*120, 4*90, 5*72, 6*60, 8*45, 9*40, 10*36, 12*30, 15*24, 18*20
• 10 years agoHelpfull: Yes(21) No(0)