Find attached the workout of the sum
125×20=2500
2500-2140=360
Your answer is correct, 360 seats are not occupied
If I am right, then it would be 4!, which would equal 24 different rankings. (sorry if it is wrong.)
Don't understand I speak English
109!!
180-64-45= 71. Angle x amd the interior angle create a 180 degree line. And 180-71= 109; the sum of the 2 angles in the triangle are equivalent to the exterior angle
