গাণিতিক ধাঁধা / Mathematical Puzzle

উত্তর একটু নিচেই দেখুন

Answer is little below

Answer: 74

Explanation:

Look at The 1st Box : 2+1=10, 2X2+1X1=5

Look at The 2nd Box : 3+4=25, 3X3+4X4=25

Look at The Last Box : 7+5=?, 7X7+5X5=74

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