From 3 Michaelmas Practice

Which of the following numbers have four significant figures?

• 6700

• 0.6700

• 6070

• 0.0067

0.000 000 691 written in standard form is

The product of two numbers is 4107. If the HCF of the two numbers is 37, then the larger number is

• 101

• 107

• 111

• 185

Find the LCM of 425 and 615

• 261 375

• 5

• 1040

• 52 275

The number 289 converted to base 3 is

• 51

• 100 100 001

• 96

• 101 201

• 6 216

• 511

• 1 411

• 21

John bought a PlayStation 4 for $2 500. The value of the device decreases by 15% annually. After two years a new PlayStation is introduced on the market. John wants to upgrade his device. What price should he sell his PS4 at, to make a profit of 10% on its current value?

• $1 925

• $1 986.88

• $1 806.25

• $1 750

The area of the shape in the picture is