Question

In the following question, there are two word to left of the sign ': :' which are connected in some way. The same relationship is shared by the third word and one of the four alternatives given below under it. Find the correct alternative.

$10:20::30:?$

• A. $45$
• B. $60$
• C. $50$
• D. $70$
• E. $40$

Answer 1

The correct option is B $60$

The second number is double of the first number.

$10\times 2=20$
Similarly
$30\times 2=60$

$\therefore$ Correct answer is option $B$