Question

1+10=10
2+20=20
3+30=28
4+40=32
5+50=?

Answer 1

Given:

1 + 10 = 10 , 2 + 20 = 20 , 3 + 30 = 28 , 4 + 40 = 32

We have ho find, the value of 5 + 50 = ?

Solution:

1 + 10 = (1 + 10) - 1 = 11 - 1 = 10

2 + 20 = (2 + 20) - 2(1 + 1) = 22 - 2 = 20

3 + 30 = (3 + 30) - 5(1 + 3) = 33 - 5 = 28

4 + 40 = (4 + 40) - 12(5 + 7) = 44 -12 = 32

Similarly,

5 + 50 = (5 + 50) - (12+ 13)25 = 55 - 25 = 30 = ?

∴ Missing number (?) = 30

Thus, if 1 + 10 = 10 , 2 + 20 = 20 , 3 + 30 = 28 , 4 + 40 = 32 , then 5 + 50 = 30.

Answer 2

Answer:

1 + 10 = 10 , 2 + 20 = 20 , 3 + 30 = 28 , 4 + 40 :32

Step-by-step explanation:

1 + 10 = (1 + 10) - 1 = 11 - 1 = 10

2 + 20 = (2 + 20) - 2(1 + 1) = 22 - 2 = 20

3 + 30 = (3 + 30) - 5(1 + 3) = 33 - 5 = 28

4 + 40 = (4 + 40) - 12(5 + 7) = 44 -12 = 32

Similarly,

5 + 50 = (5 + 50) - (12+ 13)25 = 55 - 25 = 30

Thus, if 1 + 10 = 10 , 2 + 20 = 20 , 3 + 30 = 28 , 4 + 40 = 32 , then 5 + 50 = 30.