A student of class V performed the multiplication of two-digit numbers in the following way :

17 × 26 = 17 × (20 + 6) = 340 + 102 = 442

How should the teacher evaluate this student? 

1
The teacher should give her zero marks as this is incorrect method
2
The student has adopted a different method and hence should be praised and given full marks for this
3
The teacher should deduct some marks for adopting a different algorithm.
4
The teacher should tell the student to use the same method as taught in the class. 
5
Question Not Attempted

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