### Brain Teasers

# Prime Operations

Solve the following with the conditions given :-

D A

- B C

------

B D

a) All the numbers used A, B, C and D are prime.

b) The answer BD is also a prime number.

c) The numbers DA and BC are not prime.

d) Also the number A < C.

Find the numbers A, B, C and D.

D A

- B C

------

B D

a) All the numbers used A, B, C and D are prime.

b) The answer BD is also a prime number.

c) The numbers DA and BC are not prime.

d) Also the number A < C.

Find the numbers A, B, C and D.

### Answer

The computation above is nothing but72

- 35

-----

37

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