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When was WhatsApp incorporated?

The bar graph given below represents the number of boys in a school using three apps for three months. Number of boys using Whatsapp in February is how much percent more than the number of boys using Hike in February?

Sachin's father had gifted him his old lapto. Sachin wanted a latest laptop with some advanced features on his coming birthday. As the old laptop was not of needed by his father, he decided to sell the lapto on OLX. Com and then purchase a new one. Sachin sold his laptop and was very delighted to make his first business deal. while making his purchase of new laptopfrom flipkart. com he read a notice about some relief material being collected for J&K Flood relief work. He informed his friends about the relief material, they formed a team of five students and decided to collect the material from their neighbourhood and send for relief work . can the transaction by Sachin be termed as business transaction? why or why not, state the relevant feature of business.