How do you go from 98 to 720 using just one letter?

Which English verb becomes past tense just by rearranging the letters?

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

Can you spot the hidden girl in the picture below?

What month of the year has 28 days?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Which tank will fill first?

What is the riddle which can be asked all day with a different correct answer each time.

What part of the chicken has the most feathers?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?