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Question

'(2.2 + 4.7) + 3.8' is same as '2.2 + (4.7 + 3.8)' 


  1. True 

  2. False


Solution

The correct option is A

True 


We know that, instead of adding two numbers one after another, we need to only add their sum.

i.e., (x+y)+z=x+(y+z), for all numbers x,y and z.

Since the above is true for all numbers x,y and z, it must be true for x=2.2, y=4.7 and z=3.8.

So, (2.2 + 4.7) + 3.8 = 2.2 + (4.7 + 3.8)

Hence the given statement is true.

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