The histogram shows the ages of all the workers in a London office. Given that 24 people are in the 40-55 age range, work out the total number of people in the office.

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?

Vertical angles must check all that apply

The nth term of a sequence in 2n-1 the nth term of a different sequence is 3n+1 work out 3 numbers that are in bothe sequences and are between 20 and 40