The number ‘a’ is randomly selected from the set 0, 1, 2, 3, ...... 98, 99 . The number…
Mathematics · JEE Main · NTA Exams — Statistics and Probability
The number ‘a’ is randomly selected from the set
{0, 1, 2, 3, ...... 98, 99}. The number ‘b’ is selected from the same set. Probability that the number 3a + 7b has a digit equal to 8 at the units place, is
{0, 1, 2, 3, ...... 98, 99}. The number ‘b’ is selected from the same set. Probability that the number 3a + 7b has a digit equal to 8 at the units place, is
- \(\frac{1}{16}\)
- \(\frac{2}{16}\)
- \(\frac{3}{16}\)
Answer
(D) 3 16
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