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A four digit number ( numbered from 0000 to 9999) is said to be lucky if the sum of its first two digits is equal to the sum of its last two digits. If a four digit number is picked at random; then find the probability that it is a lucky number. (a) Required probability =0.067 (b) Required probability =0.077 (c) Required probability =0.167 (d) Required probability =0.177

A four digit number ( numbered from 0000 to 9999) is said to be lucky if the sum of its first two digits is equal to the sum of its last two digits. If a four digit number is picked at random; then find the probability that it is a lucky number.

(a) Required probability =0.067

(b) Required probability =0.077

(c) Required probability =0.167

(d) Required probability =0.177

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60796 Points
2 months ago
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