Identify the pattern: 1, 1, 2, 3, 5, 8, ?

D. 13

What comes next in the series: A1, B2, C3, D4, ?

A. E5

In the sequence 10, 20, 30, 40, 50, how many multiples of 15 are present?

A. 1

If a person walks at a speed of 4 km/h, how long will it take to walk 20 km?

B. 5 HOURS

Find the missing term: 5, 10, 20, ?, 80

B. 40