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Here are 2 maths Brain Teasers. Perhaps I should not have warned readers in advance. Ha... anyway... here they are

Brain Teaser 1
You travelled from Town A to Town B at 30 km/h and arrived at Town B at 5 pm.
You travelled from Town A to Town B at 20 km/h and arrived at Town B at 7 pm.
What speed must you travel to get to Town B at 6 pm?

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If you answered 25 km/h, you are WRONG~!

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The answer is 24 km/h. Go ahead and prove it if thou have time using the algebraic skills thy maths teacher has imported imparted unto thee.

Brain Teaser 2
There are 8 sticks. 7 sticks are identical with the 8th stick marked. The sticks are mixed thoroughly in a bag. You are among 8 people who are to draw one stick from the bag each without looking. The 8 persons are to draw the sticks out of the bag one after another without replacement of the stick into the bag. The person who drew the marked stick get a forfeit. Does the first person to draw the stick have less probability of drawing the marked stick?

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No. All have equal probability (1/8) of drawing the marked stick regardless of whoever go first. Go ahead and prove it if thou have time using the probability skills thy maths teacher has imported imparted unto thee.