Search any question & find its solution
Question:
Answered & Verified by Expert
If 5 dice are rolled simultaneously, then the number of ways of getting a total of seven of the numbers appear on their faces is
Options:
Solution:
1890 Upvotes
Verified Answer
The correct answer is:
15
The following are the cases when the sum will be
(i) $7=1+1+1+1+3={ }^5 \mathrm{C}_1$ ways $=5$
(ii) $7=1+1+1+2+2={ }^5 \mathrm{C}_2$ ways $=10$
$\therefore$ Total no. of ways $=5+10=15$
(i) $7=1+1+1+1+3={ }^5 \mathrm{C}_1$ ways $=5$
(ii) $7=1+1+1+2+2={ }^5 \mathrm{C}_2$ ways $=10$
$\therefore$ Total no. of ways $=5+10=15$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.