Three different positions of the same dice are shown (figures 1 to 3). Find the number on the face opposite to the face having '1" .

Answer & explanation
Correct answer: option 2

Short trick :
Step 1) In a dice there are numbers 1, 2, 3, 4, 5, 6
Step 2) According to question 4 is common in all the dices and it shares it's boundary with all 2, 3 , 5 ,6 except 1.
Step 3) So, the number 1 is on the face opposite the face showing '4'.