Find the number of triangles in the given figure.

Find the wrong number in the given number series.

1, 2, 6, 24, 119, 720

96, 480, 120, 360, 150, 750

Find the wrong number in the given number series.

23, 27, 51, 75, 131, 211

62, 79, 98, 119, 142, 165

Find the wrong number in the given number series.

132, 147, 138, 155, 144, 161 

Find the wrong number in the given number series.

24, 120, 721, 5040, 40320, 362880

71 81 61 101 51 181

Find the wrong number in given number series.

2048, 2258, 2378, 2438, 2454, 2468