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ashish is studying late into the night and is hungry. he opens his mothers snack cupboard without switching on the lights knowing that there are 10 packets of chips& biscuits in the cupboard. he pulls out 3 pakts and all are chips. what is the probab that the snack cupboard contains 1 pakt of biscuits & 9 pkt of chips??
a. 6/55
b.12/73
c.14/55
d.7/50
someone pls solve this one ...
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