Question

9+16=12
16+25=20
25+36=30
4+64=?

Answer 1

Answer:

16

Step-by-step explanation:

9 is the square of 3 and 16 is the square of 4 and the product of 3 and 4 is 12. Other parts follow the same logic.

Answer 2

Given:

9 + 16 = 12

, 16 + 25 = 20

, 25 + 36 = 30

We have to find the value of 4 + 64 = ?

Solution:

The pattern follow:

$\sqrt{a} \times \sqrt{b}$

9 + 16 = $\sqrt{9} \times \sqrt{16}$

= 3 × 4 = 12

16 + 25 = $\sqrt{16} \times \sqrt{25}$

= 4 × 5 = 25

25 + 36 = $\sqrt{25} \times \sqrt{36}$

= 5 × 6 = 30

Similarly,

4 + 64 = $\sqrt{4} \times \sqrt{64}$

= 2 × 8 = 16 = ?

∴ Missing number (?) = 16

Thus, if 9 + 16 = 12

, 16 + 25 = 20

, 25 + 36 = 30, then "4 + 64 = 16".