Select the option that is related to the third number in the same way as the second number is related to the first number.
50 : 2209 :: 40 : ?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 1369
2209 is a little below \(50^2=2500\), so test it as a perfect square of a number just below 50.
\(47^2=2209\), and \(47=50-3\)
So the rule is: subtract 3 and square
For 40: \(40-3=37\)
\(37^2=1369\)
So the missing number is 1369.