1)
Navi has 6 tops each a different colour: red, blue, green, purple, yellow, and orange. She wants to wear each of them about the same number of time but not always in the same order, what is a good way for her to select a top everyday?
2)
Two students, Chan and Kyrya are playing a coin-tossing game. A coin is tossed repeatedly until either the outcome " Head followed by head " or "Tail followed by head" appears.
If "head followed by head" happen first, then Chan wins. If " Tail followed by head" happen first then Kyrya wins. Who the better chance of winning? Why?
2)
What am I ?
a) I am composite odd number over 50, divisible by 3 and 17, and 4 less than a multiple of 5 and 11
b) I am an even, two digits palindromic number, 7 more than the square of a number. The sum of digit is 16.