There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Which is heavier: a ton of bricks or a ton of feathers?

John went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got out and know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100?

How many runs at maximum can a batsman score in a normal one-day match? Consider the fact that the conditions are ideal and there are no No Balls, no Wide Balls and no Extras in that match.

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

I am sure no one can have two things for dinner. what are they?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

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?