दिए गए 25 क्रमागत धनात्मक पूर्णांकों में से तीन पूर्णांक यादृच्छिक रूप से चुने जाते हैं। यदि इन 25 पूर्णांकों में से सबसे छोटा पूर्णांक एक विषम संख्या है, तो चुने गए तीनों पूर्णांकों का योग एक सम संख्या होने की प्रायिकता क्या है?

A box contains 'x + 4' red, 'x – 1' green and 'x – 5' blue balls. If two balls are drawn from the bag one after another without replacement, then the probability of getting one red and one green ball is equal to the probability of getting a sum equal to or more than 8 when two fair dice are rolled. Find the probability of drawing a red ball when one ball is drawn at random from the bag.

Four persons are chosen at random from a group containing 3 men, 2 women, and 4 children. The probability that exactly two of them are children is: