In a Mathematical code language 8 + 6 = 42 , 7 + 5 = 30 , 9 + 3 = 24

1.	In a Mathematical code language 8 + 6 = 42 , 7 + 5 = 30 , 9 + 3 = 24 , then 6 + 4 = ?(1) 27 (2) 20 (3) 22 (4) 24
Answer» (2) 20 8 + 6 = 42 ⇒ 8 x 6 - 6 = 42 7 + 5 = 30 ⇒ 7 x 5 - 5 = 30 9 + 3 = 24 ⇒ 9 x 3 - 3 = 24 so, 6 + 4 = 24 - 4 = 20

In a Mathematical code language 8 + 6 = 42 , 7 + 5 = 30 , 9 + 3 = 24 , then 6 + 4 = ?(1) 27 (2) 20 (3) 22 (4) 24

Answer»

(2) 20

8 + 6 = 42 ⇒ 8 x 6 - 6 = 42

7 + 5 = 30 ⇒ 7 x 5 - 5 = 30

9 + 3 = 24 ⇒ 9 x 3 - 3 = 24

so,

6 + 4 = 24 - 4 = 20

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In a Mathematical code language 8 + 6 = 42 , 7 + 5 = 30 , 9 + 3 = 24 , then 6 + 4 = ?(1) 27 (2) 20 (3) 22 (4) 24

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