11. a and b are two positive numbers. How many of them are odd?
I. Multiplication of b with an odd number gives an even number
II. a2 – b is even.

• from the 1st statement b is even, as when multiplied by odd it gives even
  a^2 - b =even
  => a is even
  here none a and b are odd
• 10 years agoHelpfull: Yes(25) No(6)
• according to first statement b is even
  according to second statement a is even
  so there are zero odd numbers
• 10 years agoHelpfull: Yes(4) No(1)
• a can be even or odd coz 2*(any no.) gives only even no.
  2*4= 8
  2*7= 14
• 10 years agoHelpfull: Yes(3) No(2)
• 0
  both r odd
  
• 10 years agoHelpfull: Yes(2) No(4)
• a and b are postive nos.
  now, if b=2 ,4 , 6, 8
  2*3=6
  2*5=10
  2*7=14
  now,
  4*3=12 etcs multiplying even wid odd =even
  ii.a^2-b=even
  a have to be even therefore no one is even.
• 10 years agoHelpfull: Yes(0) No(0)