How much older is A than B ?

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Read the following instructions and answer the questions given below

A and B are friends and their age differ by 2 years. A’s father D is twice as old as A and B is twice as old as his sister C. The age of D and C differ by 40 years.

How old is B?

How old is A?

6 is the first perfect number. What is the next perfect number?

A number when divided by 14 leaves a remainder 9. If the same number is divided by 7, what can be the remainder?

How many factors are there for the resulting number 1 x 7 x 37 x 41?

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