How many white marbles does the jar contain? , Mathematics

Assignment Help:

A jar contains 54 marbles each of which is blue , green or white. The probability of selecting a blue marble at random from the jar is 1/3  and the probability of selecting a green marble at random is 4/9 . How many white marbles does the jar contain?                                                                                               (Ans:12)

Ans: Let there be b blue, g green and w white marbles in the marbles in the jar. Then, b + g + w = 54

∴ P (Selecting a blue marble) =     b/54

It is given that the probability of selecting a blue marble is 1/3 .

∴ 1/3 =  b/54  => b = 18

We have,

P(Selecting a green marble) = 4/9

=>  g/54  = 4/9

[Q P (Selecting a green marble) = 4/9 (Given)]

=> g = 24

Substituting the values of b and g in (i), we get

18 + 24 + w = 54 => w = 12


Related Discussions:- How many white marbles does the jar contain?

Geometry, which kind of triangle has no congruent sides ?

which kind of triangle has no congruent sides ?

Straight Line, can i known the all equations under this lesson with explana...

can i known the all equations under this lesson with explanations n examples. please..

Zero-day attack, What is Zero-Day Attack? Explain Zero-Day Attack

What is Zero-Day Attack? Explain Zero-Day Attack

The null hypothesis, The null hypothesis It is the hypothesis being tes...

The null hypothesis It is the hypothesis being tested, the belief of a specific characteristic for illustration, US Bureau of Standards may walk to a sugar making company along

Produt promotion, What is the structure of produt promotion?

What is the structure of produt promotion?

Fibonacci number, 1. Suppose n ≡ 7 (mod 8). Show that n ≠ x 2 + y 2 + z 2...

1. Suppose n ≡ 7 (mod 8). Show that n ≠ x 2 + y 2 + z 2 for any x, y, z ε Z. 2. Prove ∀n ε Z, that n is divisible by 9 if and only if the sum of its digits is divisible by 9.

Infinite, why cant we find the value of 1 upon zero

why cant we find the value of 1 upon zero

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd