An electronic machine chooses random numbers from 1 to 30. What is the

1.	An electronic machine chooses random numbers from 1 to 30. What is the probability that the number chosen is a triangular number? (a) \(\frac{11}{30}\) (b) \(\frac{1}{10}\)(c) \(\frac{1}{6}\)(d) \(\frac{7}{30}\)
Answer» (d) \(\frac{7}{30}\) Triangular numbers between 1 and 30 are 1, 3, 6, 10, 15, 21, 27, i.e., 7 in number. \(\therefore\) Reqd. probability = \(\frac{7}{30}\)

An electronic machine chooses random numbers from 1 to 30. What is the probability that the number chosen is a triangular number? (a) \(\frac{11}{30}\) (b) \(\frac{1}{10}\)(c) \(\frac{1}{6}\)(d) \(\frac{7}{30}\)

Answer»

(d) \(\frac{7}{30}\)

Triangular numbers between 1 and 30 are 1, 3, 6, 10, 15, 21, 27, i.e., 7 in number.

\(\therefore\) Reqd. probability = \(\frac{7}{30}\)

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An electronic machine chooses random numbers from 1 to 30. What is the probability that the number chosen is a triangular number? (a) \(\frac{11}{30}\) (b) \(\frac{1}{10}\)(c) \(\frac{1}{6}\)(d) \(\frac{7}{30}\)

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