Here is a puzzle to test your mathematical reasoning skills.
By Panos kalliantasis
35=23
46=34
57=47
THEN
79=?
Here is a group of equations that have some logical pattern.
Can you find this pattern and find the number that replaces the question mark?
Scroll down to see the answer
If the number is AB the pattern is:
AB =AxB +A+B
35 =3x5+3+5=23
46=4x6+4+6 =24+10=34
57 =5x7+5+7=35+12=47
79=7x9+7+9=63+16=79
Correct answer is 79
70 Math reasoning problems-eBook
70 selective math reasoning exercises to practice various arithmetic reasoning patterns
Try to solve them yourself and discover the rule that the equations follow.
In each exercise the answer and detailed reasoning are given to compare your answers and interactively develop your skills.
AB=B²-(B-A)
ReplyDelete35= 5²-2=23
46= 6²-2=34
57= 7²-2=47
79= 9²-2=79