A bag contains 6 red balls, 11 yellow balls and 5 pink balls. If two balls are drawn at random from the bag one after another, what is the probability that the first ball is red and the second ball is yellow?
log2+log4+log8+----- ধারাটির প্রথম দশটি পদের সমষ্টি কত?
45 log2
55 log2
65 log2
75 log2
169 is equal to----
11
১৩
১৫
17