how many ways can 4 people be seated in a row containing 4 seats

Find the area of a chess board with each black and white square having a side length of 4 cm. Chess board contains 8 squares in a row and 8 squares in a column. => 64 cm 2 or 128 cm 2 or 256 cm 2 or 1024 cm 2..

Fourth Row Elements - In potassium (Z=19) and calcium (Z=20), electrons enter the 4s-orbitals in accordance with the fact that 4s-orbital is slightly lower in energy than 3d-orbital. With scandium (Z=21), 3d-subshell comes into use and from scandium to zinc, this subsh..

In lithium (Z =3), the third electron goes to the next 2s orbital. In Beryllium (Z = 4), the fourth electron fills 2s orbital and in boron (Z = 5), the next electron goes to the next available 2p orbital. In carbon, the sixth electron is also to go into the 2p orbital as 2p subshell..

In lithium (Z =3), the third electron goes to the next 2s orbital. In Beryllium (Z = 4), the fourth electron fills 2s orbital and in boron (Z = 5), the next electron goes to the next available 2p orbital. In carbon, the sixth electron is also to go into the 2p orbital as 2p subshell can a..

Name 4 segments containing E. => AE ‾ , CE ‾ , ED ‾ and BD ‾ or AE ‾ , BE ‾ , ED ‾ and CE ‾ or AE ‾ , BE ‾ , EF ‾ and CE ‾ or AE ‾ , BE ‾ , ED ‾ and BD &OverBa..

A container has 10 cookies and there are 4 such containers. If only 5 cookies are to be packed in each container, how many containers will there be? => 15 or 8 or 6 or 20..

Twenty five plants are to be planted in 4 equal rows in a garden. How many plants can be planted in each row and how many plants will be left? => 6, 4 or 6, 1 or 100, 0 or 5, 5..

Question: A committee of 6 is chosen from 10 men and 7 women so as to contain atleast 3 men and 2 women. In how many different ways can this be done, if two particular women refuse to serve on the same committee? Answer: Let the two ladies who refuse to w..

There are two identical bottles. Bottle A contains 1 green ball and 1 red ball. Bottle B contains 1 red ball and 1 blue ball. In how many possible ways can you draw 2 balls? => 4 or 8 or 3 or 2..

A box contains four types of pens: type1, type2, type3 and type4. The number of pens in each type is shown in the bar graph. Find the number of pens of type3 in that box. => 7 or 8 or 10 or 12..