A line passes through the point ( 2 , - 1) (2,-1) and is perpendicular to the line \(y = \left(-\frac{2}{5}\right)x + 3\). What is its equation?

The sum of the first 10 numbers is 380, and the average of 20 numbers is 40. What is the average of the remaining 10 numbers?

Four number pairs have been given out of which three are alike in some manner and one is different.

Select the different one.

Select the number that can replace the question mark [?] in the following series.

A can complete a work in 12 days, and B in 16 days. They work together for 3 days. How much work is left?

A can do a piece of work in 20 days. He worked for 8 days. Then B alone finishes the remaining work in 12 days. In how many days can B complete the whole work alone?

In a mixture, the ratio of milk to water is 7:2. If 9 liters of water is added, the ratio becomes 7:5. Find the original quantity of milk.

Read the following statement carefully and identify the conclusion that follows.

Statement:

All A are B.No B is C. All C are D.

Conclusions:

I. No A is C.

II. Some D are not B.

If a mirror is placed on the line MN, then which of the answer figures is the right image of the given figure?