2) In a certain school, the pupils have to study Mathematics, Science or Geography. Each pupil must study at least one of the three subjects. Among a group of 40 pupils, 20 are studying Mathematics, 22 Science and 28 Geography; 12 are studying Mathematics and Science, 14 are studying Science and Geography and 15 are studying Mathematics and Geography. How many pupils are studying all the three subjects?

idk but i need points bru

Step-by-step explanation:

560

step-by-step explanation:

giggidy

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.