Which number is different from the others?

C. 22

A and B can do a piece of work in 15 days and 20 days respectively. If they work together for 5 days, how much work is left?

A. 1/3
Posted in:  Time & Work -  Aptitude -  Mathematics

In a certain code, 'DOG' is coded as '47-15-7'. What is the code for 'CAT'?

A. 3-1-20

If 'SUN' is coded as 19, 21, 14 and 'MOON' is coded as 13, 15, 15, 14, what is the code for 'STAR'?

A. 19, 20, 1, 18

The word 'LEMON' is transformed into 'MFNPO'. What is the transformation for 'ORANGE'?

A. PSBHF