Spot what is wrong here in below Picture?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

What does this rebus photo means?

What can you hold in your right hand, but never in your left hand?

How many times do a clock's hands overlap in a day ?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?