If 2+3+4=11, 3+4+5=15, 4+5+6=19, what is 7+8+9=?

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posted Jun 27, 2018 by anonymous

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2 Answers

If 2+3+4=11, 3+4+5=15, 4+5+6=19, what is 7+8+9=?
the pattern is x*2+(x+1)+(x+2)=x*4+3
7*2+8+9=31
the answer is 31

answer Jun 27, 2018 by Hanifa Mammadov

31 = (7*2)+8+9

answer Jun 27, 2018 by Althi Rajeswararao

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