Editorial Board and Pratiyogita Darpan Solutions for Chapter: Practice Set, Exercise 12: PRACTICE SET-12

Choose the correct figure which will replace the question mark.

Select the figure which does not belong to the group?

If two coulomb of charge flows through any cross section of a conductor in one second. What will be the current flowing through it?
 

For how many positive integers '$n$', $n^3-8n^2+20n-13$ is a prime number?

From the given four figures choose the correct mirror image for the problem figure when the mirror is on AB line.

If $x^2+kx+k=0$ has two real solutions, then the value of k will satisfy :

$10$ people can build a wall in $12$days. Six people each only half as efficient as those in the first group, will be able to complete $\frac{3}{5}$ of such a wall in?

Select the figure that does not belong to the following group.