CAT Question of the Day Tejas had 5 coins with him. 1 coin among these five coins has head on both the sides while other 4 coins are normal (I.e. unbiased). He randomly selects a coin and tossed it 5 times. If in all the five tosses he gets the head, then what is the probability that the selected coin was the unfair coin?
| OPTIONS | | |  | 1) | 7/8 | | | 2) | 8/9 | | | 3) | 5/6 | | | 4) | 1/8 | | | 5) | 6/13 |
Tip of the Day A line joining mid-points of two sides in a triangle is parallel to the third side and half of the third side. Last year's Question of the day (17-Jul-11) Which of the following statement(s) is/are correct? - The quadrilateral formed by joining the midpoints of the sides a quadrilateral is always a parallelogram irrespective of the original quadrilateral.
- If S is the length of an angle bisector of a triangle, 2S < Perimeter of the triangle.
| OPTIONS | | | | | 1) | Only a is correct. | | | 2) | Both a and b are incorrect. | | | 3) | Both a and b are correct. | | | 4) | Only b is correct. |
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