Question

12=21 31=59 24=45 45=87 27= ?​

Answer 1

Answer:

51

Explanation:

12×2-3=21

31×2-3=59

24×2-3=45

45×2-3=87

27×2-3=51

Answer 2

Complete the series:

27 = 51

Explanation:

The pattern followed in this series is:

(a × 2) - 3 = b

Where,

a = Number given

Now,

12 = 21

⇒ (12 × 2) - 3

∴ 24 - 3 = 21

31 = 59

⇒ (31 × 2) - 3

∴ 62 - 3 = 59

24 = 45

⇒ (24 × 2) - 3

∴ 48 - 3 = 45

45 = 87

⇒ (45 × 2) - 3

∴ 90 - 3 = 87

27 = ?

⇒ (27 × 2) - 3

∴ 54 - 3 = 51