Question

Choose the number which perfectly matches the first pair and give the correct reasons

12 : 144 = _ : 256
a) 21
b) 16
c) 18
d) 14

Answer 1

16 is your answer as it follows squaring series

Answer 2

Ans. 16
Explanation...
${12}^{2} = 144 \\ similarly... \\ {16}^{2} = 256$