

Gents:ladies=1:2
x-2/2x-2=1/3,
3x-6=2x-2
X=4
Hence , total no of people= 3*4=12
25C3
=(25 x 24 x 23)/ (3 x 2 x 1)
= 2300.
SP for Irrfan= . 4, 95,000 loss 10%
CP= . 4, 95,000x100/90 = 550,000
Cp for atul =4, 50,000 SP for atul = 550000. Profit = 100000
Profit%= (100000/450000)100= 22.22%
1931 is a perfect square.
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Total Favorable cases are 11
So prob=11/36
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