Rearrange the jumbled letters to make a meaningful word and then select the one which is different.

X, Y, Z started a business by investing 4000, 8000 and 10,000. 'X' withdraws from the
business after 6 months and "Z" withdraws after 9 months. At the end of the year the profit
is 1,80,000. What is the share of X, Y, Z in the profit respectively ?

What comes next in the series?
B, D, H, N ?

The mean of 20 observations is 19. One more observation is included and the new mean becomes 20. The $$21^{st}$$ observation is;

The maximum number of columns in the new MS Excel worksheet is