The five questions everyone played that day, in the order they were asked, with the correct answers and why they are right.
Too few players took part this day for results to be shown.
You roll a fair die 60 times. About how many sixes should you expect?
Each roll has a 1 in 6 chance, so expect about 60 ÷ 6 = 10. The actual count will usually land near 10, but rarely exactly on it — expectation is an average, not a promise.
You save $15 a week. How many weeks until you have at least $200?
13 weeks gives $195 — just short — so you need 14 weeks ($210). When you must reach a target, always round up.
Roughly how long is the River Nile?
The Nile is about 6,650 km long. It and the Amazon are close enough that which is longer depends on where you measure their sources from.
Source: en.wikipedia.org
Arrange these into a sequence where each number is double the one before, minus 1.
Correct order
3 × 2 − 1 = 5, 5 × 2 − 1 = 9, 9 × 2 − 1 = 17. Start from the smallest number and apply the rule.
You draw two cards from a standard 52-card deck without putting the first back. What is the chance both are aces?
The first card is an ace with chance 4/52; then 3 aces remain among 51 cards: 4/52 × 3/51 = 1/221. Without replacement, update the counts after each draw.
