Example GIF

Triangle - Photo Math riddle

17.Math Riddles
Which number will replace the question mark?
Triangle_Photo-Puzzle_Riddle_17-math-riddles
  • A.25
  • B.37
  • C.47
  • D.41 
    • Explanation :  

See the pattern in first triangle 5*3 +4 =19,
in the last triangle 6*4+5 = 29
then for this 7*5+6= 41