Maths Challenges (Questions)
Q1:A circle and two distinct lines are drawn on a sheet of paper. What is the largest possible number of points of intersection of these figures?
(a) 2 (b) 3 (c) 4 (d) 5
Q2: Reena tosses a coin four times. The probability that she gets at least as many heads as tails is
(a) 5/6 (b) 3/8 (c) 11/16 (d) 5/8
Q3: Given that the product of two whole numbers m × n is a prime number, and the value of m is
smaller than n, find the value of m.
Q4: Jane has 9 boxes with 9 accompanying keys. Each box can only be opened by its accompanying
key. If the 9 keys have been mixed up, find the maximum number of attempts Jane must make
before she can open all the boxes. (Singapore Asia-Pacific Mathematical Olympiad Competition)
Q5: If 32 people were to enter a statewide singles tennis tournament, how many matches would be played, including the championship?
Q6: I have 2 vats each containing 2 mats. 2 cats sat on each of the mats. Each cat wore 2 funny old hats. On each hat lay 2 thin rats. On each rat perched 2 black bats. How many things are in my vats? (NCERT class 7 Maths Brain Teasers)
Q7: How many positive integers less than and equal to 999 are divisible by 7 but not by 11?
Q8(SMOPS): How many digits are there before the hundredth 9 in the following number
Q9(Olympiad): Suppose today is Tuesday. What day of the week shall it be 100 days from now?
Follow the link to see the answers Maths Challenges (Answers)