Top 100+ Maths Puzzles Questions with Answers Pdf for Class 6, 7, 8, 9, 10

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7.	What number should replace the question mark?

Ans: 17

Sol.
8 + 9 = 17; 7 + 6 = 13.

8.	Which is the missing section?

Ans: B.

Sol.
Lines across proceed +2, -3, +2. Lines down proceed -3, +2, -3.