1 over 2 plus 5 over 4
15!
15!*10!
What is the probability of getting a sum 9 from two throws of a dice?
can you solve -1 over 2 + 2?
Is the statement true? Every number of the form
2
𝑛
+
3
2n+3 is a prime number solve using proof
log1,5 (4/9)
Find the value of m and n such that the vectors 9i+7j−9m and 9i−nj+18k have the same magnitude
and direction.
simplify $$\sum_{r=1}^{2n}{(r-1)(r+1)}$$