Question

10+80=08
45+05=11
64+08=12
99+11=??

Answer 1

99+11= 15  

Step-by-step explanation:

10+80=08

45+05=11

64+08=12

99+11=??

10 + 80  =  80 / 10  = 8  +  0  = 8

45 + 05  = 45 / 05  = 9  + 2   = 11

64 + 08  =  64/ 08  = 8 +  4    = 12

99 +  11   = 99  / 11  = 9   +  6  = 15

99+11= 15

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Answer 2

The required answer is 99 + 11 = 15.

Step-by-step explanation:

Consider the provided pattern.

Observe the pattern.

• Divide the largest number with the smallest number.
• Add even numbers starting from 0.

For example:

10 + 80  ⇒  80 / 10 = 8 (80 is the largest and 10 is the smallest number)

Now add 0.

8 + 0 = 08  (10+80=08)

Next number

45 + 05  = 45 / 05  = 9 (45 is the largest and 5 is the smallest number)

Now add next even number 2.

9  + 2 = 11

Next number

64 + 08 = 64/ 08  = 8 (64 is the largest and 8 is the smallest number)

Add next even number 4.

8 + 4 = 12

Similarly.

99 + 11 = 99 / 11 = 9 (99 is the largest and 11 is the smallest number)

Add next even number 6.

9 + 6 = 15

Hence, the required answer is 99 + 11 = 15

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Which number will replace the question mark (?) in the following series?

5, 9, 18, 43, 92, 213, 382, ?