Question

which number will replace in question mark​

Answer 1

logic

in first triangle

logic is

7² - (4²+3²)

= 49 - 25

= 24

now reverse the digits

we get

42

In same way use this logic in 2nd triangle

8² - (6²+3²)

= 64 - 45

= 19

reverse the digits

we get 91

in same way use this in 3rd triangle

9² - (5² + 3²)

81 - 34

= 47

reverse the digits

we get 74

so required answer for 3rd triangle is 74 i.e. option D

hope this will help you

Answer 2

D) 74

Step-by-step explanation:

The pattern of numbers in the first two triangles is such that square of bottom number - sum of squares of other two numbers. Enter the answer in the middle of the triangle after interchanging the digits.

First triangle = 7² - (4²+3²) = 49 - 25 = 24

The number in the middle is 42.

Second triangle = 8² - (6²+3²) = 64 - 45 = 19

The number in the middle is 91.

Applying the same to the third triangle, we get:

9² - (5² + 3²) = 81 - 34 = 47

The number in the middle will be 74.

Option D is the answer.