Math Mini Quiz

If seven people meet each other and each shakes hands only once with each of the others, how many handshakes will there have been?

• 5040

• 35

• 49

• 21

One brother says of his younger brother:

“Two years ago, I was three times as old as my brother was. In three years’ time, I will be twice as old as my brother.”

How old are they each now?

• 4, 8

• 7, 17

• 10, 20

• 5, 11

What is the value of x in the equation 2x + 5 = 17?

• 6

• 7

• 8

• 9

Suppose a family has two children and we know that at least one of them is a boy.

What is the probability that the family has two boys?

• 100%

• 25%

• 33.33%

• 50%

Move the wolf, sheep and cabbage to the opposite shore using the boat. Each time the boat can only take one item and so multiple crosses are necessary. Be careful, when the man is not around, the wolf will eat the sheep, and the sheep will eat the cabbage!

What is a valid first step?

• Move the sheep to the left

• Move the cabbage to the left

• Move the wolf to the left

• Eat the cabbage

In a standard deck of 52 playing cards, what is the probability of drawing two red cards in a row without replacement?

• (1/52)*(1/52)

• (26/52)*(25/51)

• (26/52) + (25/52)

• (1/26)*2

What is the value that is five more than one-fourth of one-tenth of one-half of 10,000?

• 125

• 130

• 250

• 255

You have a fair six-sided die. What's the probability of rolling a prime number or an even number?

• 1/2

• 1/3

• 3/4

• 1/6

If a snail is moving at 0.1 meter in 1/2 an hour, calculate its speed in cm/min

• 10 / 120 = 0.083

• (0.2 x 100) / 60 = 0.3

• 0.1 / 0.5 = 0.2

• 10 / 60 = 0.16

If a car drives at 40 km/h and a race horse runs at 10 m/s, which is faster?

• The car by 1.1 m/s

• The race horse by 4 km/h

• The car by 30 km/h

• The car by 24.8 m/s