A, B and C are three students who attend the same tutorial classes. If the probability that on a particular day exactly one out of A and B attends the class is 7/10; exactly one out of B and C attends is 4/10; exactly one out of C and A attends is 7/10. I
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A box contains 10 balls numbered 1 through 10. Anuj, Anisha and Amit pick a ball each, one after the other, each time replacing the ball. What is the probability that Anuj picks a ball numbered less than that picked by Anisha, who in turn picks a lesser n |
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A biased die has a probability of 1/4 of showing a 5, while the probability of any of 1, 2, 3, 4, or 6 turning up is the same . If three such dice are rolled, what is the probability of getting a sum of atleast 14 without getting a 6 on any die ? |
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A, B, C, D and E play the following game. Each person picks one card from cards numbered 1 through 10. The person who picks the greatest numbered card loses and is out of the game. Now the remaining four return their cards to the pack and draw again, and |
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Which among the following is greatest: 51/2, 111/3, 1231/6 ? |
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What are the units digits of 369, 6864, 4725 respectively ? |
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A = 11 * 22 * 33 * 44 * 55 * ……..1010. How many zeroes will be there at the end of A ? |
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If x = 3 + 31/2, then what is the value of x2 + 9/x2 ? |
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If x4 + 1/x4 = 47, then find the value of x3 + 1/x3 |
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The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is: |
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Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even ? |
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