A) \[\left( 19+3 \right)\times \left( 19+1 \right)\]
B) \[\left( 19+19 \right)\times \left( 3+1 \right)\]
C) \[19+\left( 3\times 1 \right)\]
D) \[19\times \left( 3+1 \right)\]
Correct Answer: D
Solution :
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