0.8 और 0.2 का तृतीयानुपातिक ज्ञात करे।

Options

A. 0.05
B. 0.8
C. 0.4
D. 0.032

Answer

A

Explanation

`0.8x " " 0.2, " "x`
(यदि a , b तथा c तीन संख्याएँ है )
then , a : b : c
`b^(2)= axxc`
c=third proportion
Let, 0.8 : 0.2 : : 0.2 : x
x be the third proportion
`therefore 0.2xx0.2=x xx0.8`
`(2)/(10)xx(2)/(10)=x xx(8)/(10)`
`implies (4)/(8xx10)= x implies (1)/(20)=x`
`implies 0.05 = x`