Geometry
The sum of the lengths of the twelve edges of a rectangular box is 140 , and the distance from one corner of the box to the farthest corner is 21. Find the total surface area of the box is
A. 776
B. 784
C.798
D. 800
E. 812
Question of the day
7 Boxes
There are 7 boxes named A, B,C, D, E, F and G. each of different sizes. A smaller box can fit inside a larger box- The following information is known:
1. Box A fits inside both boxes B and D.
2.Box G fits inside both boxes A and F.
3.Box C fits inside both boxes B and F.
Probability
Jasmine flipped a fair coin five times. In the fi rst three flips, the coin came up heads exactly twice. In the last three flips, the coin also came up heads exactly twice. What is the probability that the third flip was heads?
Diwali Gift-Waali
In a group of friends, every friend sends a gift to every other friend on Diwali. After the last Diwali, some more friends get included in the group and the number of gifts increases by 46 this Diwali.
Out of the following , what can be the number of friends in the group this year ?
A. 11
B. 12
C. 13
D. 23
See our previous ‘Puzzles of the Day’:
Puzzle of the Day : 29
Puzzle of the Day : 28
Algebra
How many real numbers x are solutions to the following equation ?
|x − 1| = |x − 2| + |x − 3|
A Serial Killer
What is the next number in the sequence : 1, 4, 5, 6 , 7, 9, 11 , ……
Geometry
An icosidodecahedron is a convex polyhedron with 20 triangular faces and 12 pentagonal faces. How many vertices does it have?
25 Horses
There are 25 horses. What is the minimum of race needed so you can identify the fastest 3 horses ? You can race up to 5 horses at a time , but you do not have a watch.
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