Question

find the ratio of 25,000 15,000 and 40,000​. please give me step by step solution​

Answer 1

Answer:

To Prove ∑nr=03r×Crn=4n by binomial expansion

(a+b)n=C0nanb0+C1nan−1b1....Cnna0bn=

∑nr=0Crn×an−r×br

if

we compare the two terms

∑nr=03r×Crn=∑nr=0Crn×an−r×br

hence if we make a=1 and b=3

we get ∑nr=0Crn×1n−r×3r

which is same as given term,

∑nr=03r×Crn

putting the same values in (a+b)n=(1+3)n=4n

Answer 2

Answer:

5:3:8

Step-by-step explanation:

To obtain = 25000:15000:40000

First we will divide them by common factors

25000/5000=5

15000/5000=3

40000/5000=8

There are no common factors of 5,3,8.

So, ratio of 25000,15000 and 40000 is 5:3:8.