Scripts Errors Question:

Flow of fluid takes place due to its?

Answer #1Viscosity

Answer #2Rate of shear deformation.

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4___4___4___4 = 20 Use +, -, /, * how to Solve It?	My 1st friend gave me 1000 and 2nd gave me 500 i have loos 1000 rupees then i purchase some thing with the cost of 300 and gave 100 100 both friends 1st friend remaining 900 and 2nd remaining 400 900+400+300=1600 why?