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Question

Sort the following numbers in increasing order from top to bottom.
  1. 25×52
  2. 22×52
  3. 23×53
  4. 51×25


Solution

The correct option is
25×52=(2×2×2×2×2)×(5×5)
On rearranging the above equation,
=(2×5)×(2×5)×(2×2×2)
=(10×10)×8
=100×8
=800
 
22×52=(2×2)×(5×5)
On rearranging the above equation,
=(2×5)×(2×5)
=(10×10)
=100

23×53=(2×2×2)×(5×5×5)
On rearranging the above equation,
=(2×5)×(2×5)×(2×5)
=(10×10×10)
=1000

51×25=(5)×(2×2×2×2×2)
On rearranging the above equation,
=(2×5)×(2×2×2×2)
=(10×16)
=160

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