Class VIII

. Product of a5b2 and a2 is
  1. a3b2
  2. a4b2
  3. a7b2
  4. a10b2
If 54x7 is divided by 6x2 then answer will be
  1. 9x9
  2. 9x5
  3. 5x9
  4. 6x9
By simplifying (xy2z)-3⁄(x3y3z3)-2, answer will be
  1. x2y3
  2. x-3z-3
  3. x3z3
  4. x2z-3
By simplifying (x3y2)2 for negative indices, answer will be
  1. x-6y-4
  2. 1/x-5y-3
  3. 1/x-4y-2
  4. 1/x-6y-4
If 30m12n9 is divided by 6m8n4 then answer will be
  1. 8m4n2
  2. 9m4n6
  3. 5m4n5
  4. 6m3n2
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