Numerical Appli...

Find the mean of the data $$10, 15, 17, 19, 20$$ and $$21$$.

Factorial of negative numbers is always greater than 1.

A contractor estimates that $$3$$ persons could rewire Jasminders house in $$4$$ days. If he uses $$4$$ persons instead of three, how long should they take to complete the job?

A school has $$8$$  periods a day each of $$45$$ minutes duration. How long would each period  be, if the school has  $$9$$ periods a day, assuming the number of school hours to be the same?

$$A$$ can do a piece of work in $$24$$ days. If $$B$$ is $$60\%$$ more efficient than $$A$$, then the number of days required by $$B$$ to do the twice as large as the $$A's$$ work is -

The mean of $$8, 7, 9, 10, 12, x$$ and $$14$$ is $$12$$, then find the value of $$x$$.

Find the arithmetic mean of integers from $$-5$$ to $$5$$

If 09/12/2001 happens to be Sunday,then 09/12/1971 would have been at

Find the mean of integers from $$-4$$ to $$5$$