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Dialling a telephone number to his daughter an old man forgets the last two digits and dialled at random remembering only that the last two digits are different. The probability that the number dialled is correct is: (a) 1/10 (b) 1/45 (c) 1/90 (d) 1/135

Dialling a telephone number to his daughter an old man forgets the last two digits and dialled at random remembering only that the last two digits are different. The probability that the number dialled is correct is:
(a) 1/10

(b) 1/45

(c) 1/90

(d) 1/135

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60787 Points
2 years ago
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