For the following questions answer them individually
The mean of 20 observations is 19. One more observation is included and the new mean becomes 20. The $$21^{st}$$ observation is;
In a factory, 60 workers can stitch 120 m of clothes in 7 days, what length of clothes can be stitched by 70 workers in 5 days?
Mother of K's father is the sister of G. S is the daughter of G. How is S related to K's father?
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