Find the missing number in the series: 5, 10, 20, 40, ?, 160.

C. 80

Choose the odd group of numbers from the following.

D. 12, 14, 16

D is the mother of E and F. G is the father of E. How is F related to G?

A. SON

In a class, Emma scored higher than Noah but lower than Liam. Ava scored lower than Noah. Who scored the highest?

C. LIAM

If the code for 'CAT' is 12, 15, 18 and the code for 'DOG' is 14, 17, 20, what is the code for 'BAT'?

A. 10, 13, 16