College of Admission Tests Multan

Simple Arithmetic

Solve the question of and select the option from the choices A through D/E. Check your Answer and view the explanation.

Question: 6

Simplify
  • x 6 y 9
  • 3 x 6 y 9
  • x 5 y 6
  • x8y27

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Correct Answer: A

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To solve this expression, remove the outer exponent and expand the terms.

( x 2 y 3 ) 3 = x 2 x 2 x 2 y 3 y 3 y 3

By exponential rules, add all the powers when multiplying like terms.

= x 6 y 9