JEE Advanced 2020 Concept Recapitulation Test 1 Paper 2

E1 "No card is king from removed cards"
E2 '' 1 card is king from removed cards
E3 " 2 card is king from removed cards"
E4 " 3 card is king from removed cards"
E5 " 4 card is king fromremoved cards"
F=3 cards are drawn from pack those are kings. P(F)=

s

∑

i=1

P(Ei)⋅P(‌

F

Ei

)=‌

‌48C26

‌52C26

⋅‌

‌4C3

‌26C3

+‌‌48

C25

‌4

C1‌52C26⋅‌

‌3C3

‌25C3

+0+0+0
=‌

4

‌52C26‌26C3

(‌48C26+‌48C25)=‌

4×‌49C26

‌2C26‌26C3

=‌

1

(13)(17)(25)