Mark the odd one in each series:Exocrine, endocrine, salivary gland, ligament

Mark the odd one in each series:Maxilla, mandible, labrum, antennae

Mark the odd one in each series: RBC, WBC, platelets, cartilage

Mark the odd one in each series: Areolar tissue, blood, neuron, tendon

Mark the odd one in each series: Protonema, mesothorax, metathorax. coxa

A metre stick is balanced on a knife edge at its centre. When two coins, each of masb 5 g are put one on top of the other at the 12.0 cm mark, the stick is found to be balanced at 45.0 cm. What is the mass of the metre stick?

Out of the six faces of a die, three are marked with the number 2,two are marked with the number 1 and one is marked with the number 3.The die is tossed once. Find in how many ways the following events may occur :(v) the event of getting an odd number