Ben, from Bob's maths group had a go at solving last weeks problem. Do you agree with him?

Division or reasoning?

Without using a calculator AND without using division, can you think of a way to answer (d) by using the answers to (a), (b) and (c)? 

YES, you can use a calculator to work out (a), (b) and (c)

(a) What is the remainder when 1111 is divided by 7?

(b)What is the remainder when 11 is divided by 7?

(c)What is the remainder when 1111111 is divided by 7?

(d)What is the remainder when 111.. (100 ones)...111 is divided by 7?

Bens Answers:

A) 5

B) 4

C) 1

D) 1