Study the given pattern carefully and select the number that can replace the question mark (?) in it.​

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Logic: first add both lower digits of the triangle and do square of the sum of lower two digits is equal to upper number.

First triangle: 6 + 2 = 8²= 64.

Second triangle: 4 + 3 = 7²= 49.

Third triangle: 2 + 3 = 5²= 25.

Next digit will be: ? =25

Thus, the correct option is (b) 25.