MCQOPTIONS
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MCQOPTIONS
| 1. |
Two numbers a and b are chosen ar random from a set of first 30 natural numbers, then the probability that a2 - b2 is divisible by 3 is |
| A. | \(\frac {47}{87}\) |
| B. | \(\frac {15}{87}\) |
| C. | \(\frac {12}{87}\) |
| D. | \(\frac {9}{87}\) |
| Answer» B. \(\frac {15}{87}\) | |