Questions

ELISA - Enzyme-Linked Immuno Sorbent Assay.

An ELISA test may be used to diagnose: HIV, which causes AIDS.

An ELISA also called EIA, is a test that detects and measures antibodies in your blood. Antibodies are proteins that your body produces in response to harmful substances called antigens.

It is WATER.

International Plastic Bag Free Day was observed on 3rd of July 2017. It has been dedicated to heightening awareness about plastic and disposable carrying devices. International Plastic Bag Free Day gives us an opportunity to remind ourselves, and others, that every action we take, and every bag we dispose of effects the lives of everyone in the world for generations to come.

The harvest festival of Baisakhi popularly celebrated in North India coincides with the Songkran festival of Thailand, the Thingyan in Myanmar and the Aluth Avurudda in Sri Lanka. In all the latter three festivals, the coming of a New Year is the central theme and involves various indigenous ways of celebrations.

Logic is

1st fig : 9x2 + 5 = 23

2nd fig : 6x3 + 4 = 22

3rd fig : Nx4 + 5 = 9 => N = 1.