identify:(a simple one)

this Nobel laureate trio was hailed by the Nobel jury as?

identify and connect

A)

B)

C)

D)

1)identify the logo "A" the person "B"
2)what is depicted in "D"
3)connect the images

mnemonic

"Leaves of three, let it be; berries white, danger in sight" or "Leaves of three let it be; hairy vine, no friend of mine": these are identification mnemonics for what?

connect the images

 

      

identify the persons in the 2nd image and connect the images and the logo

MATH PUZZLE

1)There are 1981 points each point is connected to every other point( no 3 points are on the same line ). Every line produced is either given a +1 or -1 charge. Show that their exists at least one point such that the product of the charges on all the line connected to it is +1.