Question

    Consider all prime numbers between 1 and 100.

    >Which of the following statements is (are) correct? a. A number that is one greater than a multiple of 5 has a unit digit 3 or 6. b. The sum of all numbers which are one greater than a multiple of 5 is 215. c. The sum of all numbers which are one greater than a multiple of 5 and also one     greater than a multiple of 6 is 92.
    A b and c Correct Answer Incorrect Answer
    B a and c Correct Answer Incorrect Answer
    C b only Correct Answer Incorrect Answer
    D a and b Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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