Medium Question

At 9 am a car (A) began a journey from a point, traveling at 40 mph. At 10 am another car (B) started traveling from the same point at 60 mph in the same direction as car (A). At what time will car B pass car A?

2009 Question 9

How many factors does 600 have?

How to do?

1. Write the number into index notation. e.g 240=2⁴x3¹5¹

2. Add all the index by 1. e.g 2⁴=4+1 The 4 is from the index above 2

3. multiply all the index that was added then you get the answer

2009 Question 7

1²+2²+3²+4²......+90²

2009 Question 4

Find the smallest 7 digit number where
(i)the first digit is 8
(ii)all the digits are diferrent
(iii)the number is divisible by 3

2009 Question 1

Find the value of (x²-x-2)(3x+2)