Question
A bag contains cards numbered between 23 and 92. If one
card is drawn from the bag, the probability that the number on the drawn card is a perfect square is:Solution
The perfect square number from 23 to 92=25,36,49,64,81 Total number of favorable outcomes =5 Total outcomes =92-23+1=70 Required probability =5/70 =1/14.
The sum of three consecutive even numbers is 28 more than the average of these three numbers. Then the smallest of these three numbers is
Which of the following is the correct order?
Economy of a bowler after (0.5n – 6) overs is 6. In the next six overs, he conceded 12, 9, 18, 7, 20 and 10, and his economy increases by 2. Find the ...
A box contains 6 blue shirts, 7 yellow shirts and 9 pink shirts. In how many ways can 4 shirts be drawn from the box, if at least one blue shirt, one ye...
A trader purchased 132 dozens of mangoes at Rs.475 per dozen and could sell only 125 dozens at Rs.530 per dozen. What is the value of stock of mangoes i...
The greater of the two numbers whose product is 900 and sum exceeds their difference by 30 is
If '+' means '-', '-' means '+', '×' means '÷', and '÷' means '×', then the value of 42 – 12 × 3 + 8 ÷ 2 + ...
197 ___ 32 ___ 16² ___ 45 ___ 15 = 6,557
A water tap fills a tub in 'p' hours and a sink at the bottom empties it in 'q' hours. If p < q and both tap and sink are open, the tank is filled in...
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