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● Let from the first two triangles get the logic.
1st️ triangle:
=> 5|3|4 = 18
So
=> 5+3+4+(1+8)
=> 12 + 9
=> 21
2nd️ triangle:
=> 3|5|3 = 65
So
=> 3+5+3+(6+5)
=> 11 + 11
=> 22
● As from the 1st and 2nd triangle its clear that the digits are added one by one.
● Result of 1st and 2nd triangle is 21, 22.So the 3rd one must be equal to 23.
3rd ️triangle:
=> 9|6|3 = ?
So
=> 9+6+3+(x+y) = 23
=> 18 + (x+y) = 23
=> x+y = 23 - 18
=> x+y = 5
● So the sum of x and y must be equal to 5.
● In the Given options we can say that 50 is the only number whose sum of digits is equal to 5.
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