Question

the total number of rational terms in the binomial expansion of( 71/5-31/10)whole power 60

Answer 1

Answer:

Answer

Correct option is

D

54

Given (7

5

1

−3

10

1

)

60

has 61 terms

General term T

r+1

=

60

C

r

7

5

60−r

3

10

r

∴ for rational term, r=0,10,20,30,40,50,60⇒ no of rational terms =7

∴ number of irrational terms=61−7=54