Question

mental ability of class 7

please explain​

Answer 1

Answer:

"A" is the correct answer

Explanation:

The pyramid goes like so...

5 = 5

7+3 = 10

5+8+2 = 15

9+6+4+? = 20

Hence, 19+? = 20

? = 20 - 19

? = 1

Hope it helps!