probability problem

Probability Level 3

Two cards are drawn without replacement from a well shuffled pack of 52 cards,find the probability that one is spade and other is queen of red color

1\102 13\14 1\51 1\13

Aman Sharma by Aman Sharma , 25, India

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

1 solution

Probability that the card is spade is 1/4 . Probability that its a red queen is 2/51 . Multiply both because "and" is used as connective.

1 Helpful 0 Interesting 0 Brilliant 0 Confused

Note: You have to multiply the answer by 2. You found the probability that the first card is a spade and the second card is a queen of red color.

I have updated the answer to 1/51.

Calvin Lin Staff - 6 years, 8 months ago

Log in to reply

Okay I don't know if I have it wrong, just hear me out. 1) There are 13 Spade Cards which gives their probability as 13/52.

2) There are 2 Red Queens which gives a probability of 2/51 (since there is no replacement).

Then The Total Probability is multiplication = 1/102

Prathamesh Dusane - 6 years, 7 months ago

I think the answer is 1/102 . please read carefully calvin lin

muhammad askar - 6 years, 5 months ago

In response to Lin: Sir, why are u multiplying the answer by 2?

karthik r k - 6 years, 4 months ago

Sir can you please explain why the answer is 1/51 and not 1/102?

Ajith Kumar - 6 years, 4 months ago

If you multiply, you'll get 1/102 know?

A Former Brilliant Member - 6 years, 8 months ago

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...