Question:a + b + c + a + b + c + a এর সরল মান নিচের কোনটি ? 

A a + b + c 
B a + 2b + 3c 
C 2a + b + c 
D 3a + 2b + 2c 

+ Answer
D 

+ Explanation
a + b + c + a + b + c + a

= (a + a + a) + (b + b) + (c + c)

`= 3a + 2b + 2c

+ Report

Irin Moni

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