Question

if,1+4=3,4+9=19,9+16=85 so, 16+25=
​

Answer 1

Given data :

1+4=3,

4+9=19,

9+16=85.

To find :

16+25=?

Solution :

Logic :

In a set, Let 1st number = a, 2nd number = b, 3rd number = c.

So, In a + b = c

c can be achieved by a² + √b

Application :

1+4=3 :

Here, a=1, b=4

1² + √4 = 1 + 2

            = 3              [ = c]

4+9=19 :

Here, a=4, b=9

4² + √9 = 16 +3

             = 19              [ = c]

9+16=85 :

Here, a=9, b=16

9² + √16 = 81 + 4

              = 85              [ = c]

16+25 = ? :

Here, a=16, b=25

16² + √25 = 256 + 5

                = 261             [ = c]

Therefore, 16 + 25 = 261

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