Probability Ques 20
Question-
If two unbiased dice are rolled simultaneously, what is the probability that the sum obtained from them would be equal to 7 ?
(1) $\frac{2}{9}$
(2) $\frac{1}{6}$
(3) $\frac{7}{36}$
(4) $\frac{3}{4}$
(5) $\frac{5}{36}$
(IBPS RRBs Officers CWE (Prelim Exam) 10.09.2017)
Show Answer
Correct Answer: (2)
Solution: (2)
Total possible outcomes $=6 \times 6=36$
Total favourable outcomes $=(1,6),(6,1),(2,5),(5,2),(3$, $4),(4,3)=6$
$\therefore$ Required probability $=\frac{6}{36}=\frac{1}{6}$
BETA
