Q27 of 36 Page 161

Fill in the blanks

For a, b, c to be in G.P. the value of is equal to ..........


Here, it is given that a, b, c are in G.P



⇒ b = ar …(ii)


Putting the value of b in eq. (i), we get



⇒ c = ar × r


⇒ c = ar2


So,







Ans. For a, b, c to be in G.P. the value of is equal to


More from this chapter

All 36 →
25

If tn denotes the nth term of the series 2 + 3 + 6 + 11 + 18 + ... then t50 is

 26

The lengths of three unequal edges of a rectangular solid block are in G.P. The volume of the block is 216 cm3 and the total surface area is 252 cm2. The length of the longest edge is

 28

Fill in the blanks

The sum of terms equidistant from the beginning and end in an A.P. is equal to ............ .


 29

Fill in the blanks

The third term of a G.P. is 4, the product of the first five terms is ................ .