Probability
Algebra
Number
Money
Riddle me this
100
What is the probability of drawing a king from a standard pack of cards?
4/52, or 1/13
100
If y = 6, evaluate 3y - 2
16
100
What is the square root of 81?
9
100
Joe earns $12.50 per hour. How much does he earn for 4 hours?
$50
100

What goes up but never comes down?

Your age

200
I toss an unbiased coin 10 times for a result of 7 heads and 3 tails. What is the probability the next toss will be a tail?
1/2
200
What is b cubed divided by b
b squared
200
How many prime numbers are there between 20 and 30?
2
200
Jack earns $4000 per month. How do I calculate his weekly wage?
Multiply $4000 by 12 and then divide by 52.
200

I cannot talk but when spoken to I always reply. Who am I?

An echo

300
How many different ways can I stack 3 books?
6
300
Expand and simplify 4(3d + 6) - 3(8 - 2d)
12d + 24 - 24 + 6d = 18d
300
What is 4 + 3 x 10?
34
300
If a TV costs $682 including GST, how much did it cost before GST?
$620
300

 I am an odd number. Take away a letter and I become even. What number am I?

Seven

400
I toss 2 coins. What is the probability they will both be heads?
1/4
400
Make N the object of M = 2Nsquared
N = the square root of M/2
400

Express 7/9 as a decimal.

0.78

400
Jane's annual salary is $62000. She has the following allowable deductions. Union $700, Donations $400 and work related expenses $850. What is her Taxable Income?
$60050
400

A word I know, six letters it contains, remove one letter, and twelve remains. What am I?

Dozens

500
In a 10 horse race all have an equal chance. What is the probability of selecting the first 3 horses to finish in the correct order?
10 x 9 x 8 = 720
500
Factorise (3abc - 6bc)
3bc(a - 2)
500
Simplify 15 b cubed c divided by 3 b c squared.
5b squared divided by c
500
Bill bought 10 ovens for $250 each. He sold them for $350 each. Calculate his profit as a percentage of cost price.
40%
500

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

4 sisters and 3 brothers

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