A box contains cards numbered 11 to 123. a card is drawn at random from the box. find the probability that the number on the drawn card is (i) a square number (ii) a multiple of 7
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22
Total no. Of cards = 113
1) square no. Are 16,25,36,49,64,81,100,121
No.of favourable outcomes = 8...p =8/113
2) a multiple of 7 - 14,21,28,35,42,49,56,63,70,77,....119
No. Of favourable outcomes = 16....p=16/113
1) square no. Are 16,25,36,49,64,81,100,121
No.of favourable outcomes = 8...p =8/113
2) a multiple of 7 - 14,21,28,35,42,49,56,63,70,77,....119
No. Of favourable outcomes = 16....p=16/113
Answered by
2
(i) Square numbers between 11 to 123 are :-
{16, 25, 36, ..........., 121}
P (square number) = 8 ÷ 113
Multiple of 7 between 11 to 123 are :-
{14, 21, 28, ............., 119}
P (multiple of 7) = 16 ÷ 113
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