A group of children stand holding hands in a large circle and a teacher walks around a circle giving each child in order a number 1,2,3,4,5,6,7,8...... so on.. If number 12 standing opposite number 30. How many children are there in the circle.

• k/2+12=30. so k=36
  or children btween 12 & 30= 17. so children 17*2+2=36.
• 10 years agoHelpfull: Yes(2) No(1)
• let angle b/w consecutive children n so
  30n-12n=180
  n=10
  so
  children=360/10=36
• 10 years agoHelpfull: Yes(0) No(2)