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CAT-2003-Previous Years Paper
If a, a + 2 and a + 4 are prime numbers, then the number of possible solutions for a is
|D||More than three|
As any prime number greater than 3 can be expressed in the form 6n ± 1, the minimum difference between the three consecutive prime numbers will be 2 and 4. The values that satisfy the given conditions are only 3, 5 and 7 i.e., only one set is possible.