Here you can find the solutions of puzzles 57-58-59
See the answers and the details in the puzzles "Find the missing number"
Puzzle 57
Correct answer is 20
First row
42 4X2+(4+2)=14
14 1X4+(1+4)=4+5=9
Second row
62 6x2+(6+2)=12+8=20
20 (2X0)+(2+0)=2
Third row
28 (2X8)+(2+8)=16+10=26
26 (2X6)+(2+6)=12+8=20
Puzzle 58
First solution
25+5=30
24+6=30
So 24+?=72 Therefore ?=72-24=48
Second solution
Highest common factor (25,30)=5
Highest common factor (24,30)=6
Highest common factor (24,72)=24
Puzzle 59
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