Answer If 1+4=5 and 2+5=12 and 3+6=21 how much does 5+8=

Mathematics · College · Wed Jan 13 2021

Answered on

Given:

1+4=5,  2+5=12 and 3+6=21

1+4=5 -> 1×4+1 = 5

2+5=12 -> 2×5+2 = 12

3+6=21 -> 3×6+3 = 21

So,  5 + 8 is 

5+8  -> 5×8+5 = 45

 

Thus, 5+8 = 45.