A) 60
B) 55
C) 65
D) 70
Correct Answer: A
Solution :
Each box has 10 books; 1st box has 10 books; 2nd box has 10 + 10 = 20 books. 3rd box has 20 + 10 = 30 books. . 4th box has 30 + 10= 40 books. 5th box has 40 + 10 = 50 books. 6th box has 50 + 10 = 60 books.You need to login to perform this action.
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