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Question

PUZZLES :

How many total number of triangles are there in above diagram?

  • 25
  • 27
  • 35
  • 45
  • 47
Answer- E

It's not easy to conclude. Let's go for divide and conquer rule. Divide the triangle by two parts left and right part. Right side part is replica of left side part. So start count from left and multiply with 2. so you will get for second part as well. While doing this process make sure that some triangles exist by adding left and right sides.You have to count those triangles as well then only will get correct answer.