In the following question, select the odd number-pair from the given alternatives :

Options

A. (a) `20 - 30 `
B. (b) `35 - 45 `
C. (c) `45 - 55 `
D. (d) `25 - 30 `

Answer

D

Explanation

Except the number -pair 25-30, in all other number-pairs the difference between-pairs the difference between the two numbers is 10,
`30 - 20 = 10`
`45 - 35 = 10`
`55 - 45 =10`
But, `30 - 25 = 05`