Day 24 Dr. Sahab Series Marathon

There are 24 hours in a day. What fraction of a day does 11 hours represent?

The sum of an infinite geometric series is 2 and the sum of the geometric series made from the cubes of this infinite series is 24. Then the series is:

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series : BT, DR, FP, ?

A series is given with one term missing .Select the correct alternative from the given ones that will complete the series : BT , DR , FP , ?

At the end of the marathon everybody was exhausted.

If ^(28)C_(2r):^(24)C_(2r-4)=225:11,f in dr