The series given below contains a sequence of numbers. Identify the incorrect combination: 

56, 54, 58, 49, 66, 34

Complete the series choosing the missing letter

ab__b__aa__b__ba

If 1st June, 2006 is a Tuesday, how many Sundays would be there in the month? 

If VIRUS is coded WJSVT, then how is BACTERIA coded? 

Find the next expression in the series: 

ABZ, ABBYZ, ABBBXYZ, ______?

Consider a group comprising of 4 students: Reena, Beena, Meena and Neena, who stand in a row.Reena and Beena stand in 6th and 7th positions respectively from the left. Meena and Neena stand in the4th and 5th positions respectively from the right. When Beena and Meena exchange their positions, thenBeena will be 15th from the left. Originally, Neena's position from the left is: 

 If DEMAND is coded DNAMED and SUPPLY is coded YLPPUS, then how is QUANTITY coded? 

Direction: Study the following information carefully and answer the given questions. 

Eight people i.e. K, L, M, N, O, P, Q, and R were born in different years i.e. 1979, 1982, 1984, 1988, 1990, 1994, 1995, and 2000 but not necessarily in the same order. (Note: Consider the base year as 2021.)

The age of P is a multiple of 13. Two people were born between P and K. The difference between the age of K and O is 4 years. One person was born between O and L who was not born in an odd-numbered year. Three people were born between L and R. The difference between the age of R and Q is 5 years. M was born after N.

If all the people are arranged in older to younger order by their names according to English alphabetical order then how many people will remain unchanged?