In a box there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?

The answer is 175/396

Total combination of balls = 212 Combination of balls with no green balls = 27 Combination of balls with no blue balls = 28 Combination of balls with no blue balls  and no green...

It is given that the box contains 1 red ball and 3 identical white balls. Let us denote the red ball with R and a white ball with W. When two...

The box contains 2 red balls and 3 black balls. Let us denote the 2 red balls as R1, R2 and the 3 black balls as B1, B2, and B3. The...

Total number of marbles = 10 + 20 + 30 = 60 Number of ways of drawing 5 marbles from 60 marbles = 60C5 (i) All the drawn marbles will be blue...

Number of kings and queen in a deck of 52 cards = 8 P( either a king or a queen) = 8/52 = 2/13 P(neither a king nor a queen) = 1-2/13...

(c) :- In Wurtz reaction alkyl halide reacts with sodium metal in the presence of dry ether to give alkane.

(d) The required number of ways = (10 +1)(9 +1)(7 +1) -1 = 879.

(a) According to the given statements, only statement 1 and 4 can both be true because there may be a situation, when all the balls are black (1) or it...

(b) According to question R = y and y = 2G ∴ R = 2G Hence, the number of red balls is double the number of green balls.