A bag contains 12 white and some black balls. If the probability of drawing a black ball from the bag is thrice that of drawing a white ball, find the number of black balls in the bag.
Given, Number of white balls = 12 Let x be the number of black balls. Total number of balls in the bag = 12 + x Also, the probability of drawing a black ball from the bag is thrice that of drawing a white ball. ⇒ x/(12 + x) = 3[12/(12 + x)] ⇒ x = 36 Hence, the number of black balls in the bag = 36
Which of the following technique is used to reduce soil erosion, evaporation, kinetic energy impact of rain drops?
Tristeza is the viral disease of citrus which is particularly transmitted by which of the following:
White blisters of crucifers is caused in mustard due to which of the following pathogen?
central soil salinity research institute is located at
Gossypol toxin is produced in
The word “ Communication” is derived from which language
Minerals absorbed by root move to the leaf through_____
Application developed by Indian institute of wheat and barley research for pest management in wheat crop is
The medicinal plant known as “second shilajeet” is:
An irrigation project is called major irrigation project when CCA is
