Q: 5 + 5 + 5 = 550

A: 545 + 5 = 550 or
5 + 545 = 550

Just draw a line in any of the plus (+) sign and make/turn it into number 4

Q:   1 + 5 = 18
     2 + 10 = 36
     3 + 15 = 54
     4 + 20 = ?

A: 4 + 20 * 3 = 72 

(Add the two given numbers and multiply it by 3)

Q: IF, 1 + 2 = 3
          3 + 4 = 21
          5 + 6 = 55
 THEN,
          4 + 5 = ?

A: 4 + 5 = 16 + 20 = 36 

{(Take 4^2 + 20 = 36) square the first number = 4^2 and multiply the two numbers for the second number 4 x 5 = 20, add them together, 36}

Q: Try to find the Mitsake?

    ABCDEFGHIJKLMNOPQRSTUVWXYZ

A: The spelling of mistake

Q: IF, 12 = 22
           23 = 36
           34 = 412
           45 = 520
           56 = 630
THEN,
           68 = ?

A: 68 = 848 

(Place or take the second digit, in this case, it is 8 and multiply the two numbers 6 x 8 = 48. Add them together, we get 848)

 Q: What number goes into the question mark?
     K + A + A = 15
     K + J  +  J  = 35
     A + A + Q = ?

 A: 14

Deck of cards , A = 1, J = 11, Q = 12, K = 13.

Q: Find the missing number/values in the following series?
     2  +  3  =  5
     3  +  7  =  17
     4  +  5  =  19
     5  +  8  =  37
     6  +  7  =  ?

A: 6 + (7 X5) = 41 

(Multiply 3 with 1, 7 with 2, 5 with 3, 8 with 4 and 7 with 5 and add the number you get with the number which is at the beginning of the row)

Q: Calculate the equation and find the number? 
                         5000854 
                          -7111 
                         +1

A: SUCCESS 

Write all of them in digital format remove or add shapes based on minus or plus, 0 - 7 = l + 1 = u, 0 - 1 = c, 8 - 1 = e

Q: A + B = 76
       A - B = 38
      A / B = ?

A: WE FIND, A = 57
                          B = 19
       WE GET,
                    A / B = 57/19
                              = 3


Q: Find the missing number in the box?


A: 8 
(The total of all the rows or columns is 15)