How many square are there in figure ?

75 71 69 70

70

Total squares in big square , Trick = 5 × 5 + 4  ×  4 + 3  × 3 + 2  × 2 + 1  × 1 = 25 + 16 + 9 + 4 + 1 = 55 figure have 3 side square , total squares in all the three side square = 3  × 5 = 15  Total number of squares in figure = 55 + 15 = 70