In a group of five friends: Alice, Bob, Charlie, David, and Eva, the following conditions apply: 1) Alice cannot be selected if Bob is selected. 2) Charlie must be selected if David is not selected. 3) Eva can only be selected if Alice is also selected. Which of the following groups can be selected?

A. ALICE, CHARLIE, EVA

A can do a work in 15 days, B can do it in 20 days, and C can do it in 30 days. How long will they take to complete the work together?

A. 6 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

What is the code for 'MOUSE' if M=13, O=15, U=21, S=19, E=5?

C. 1319215

Find the number that does not fit with the others.

D. 20

Among five siblings, Anna is older than Ben but younger than Clara. David is younger than Ben, and Eva is the youngest. Who is the oldest?

C. CLARA