Question

There is some relationship between the pairs of letter/number on the left of the sign(: :) The same relationship exists between the two terms on the right of which one is missing Find the missing one from the given alternatives
? : 5 : : 12 : 20

• A. $0$
• B. $2$
• C. $3$
• D. $4$

Answer 1

The correct option is C $3$

$1\times 1+1=1+1=2$

$2\times 2+2=4+2=6$

$3\times 3+3=9+3=12$

$4\times 4+4=16+4=20$