Together there are 754 students and teachers in the meeting if the ratio of students to teachers is 27:2 how many teachers are there

Can you draw an isosceles triangle with only one 80 degree angle?

(a) (8%) compute the probability of an even integer among the 100 integers 1! , 2! , 3! , until 100! (here n! is n factorial or n*(n-1)*(n-2) *… 1) (b) (16%) compute the probability of an even integer among the 100 integers: 1, 1+2, 1+2+3, 1+2+3+4, …., 1+2+3+… + 99, and 1+2+3+… + 100

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.