The traffic came to a standstill after the heavy

In the series _b_a_ba_b_abab_aab; fill in the six blanks (_) using one of the following given four choices such that the series follows a specific order.

Using 2, 2, 3, 3, 3 as digits, how many distinct numbers greater than 30000 can be formed?

Consider the following statements :

1.    The sum of 5 consecutive integers can be 100.

Consider the following multiplication problem:

(PQ) × 3 = RQQ, where P, Q and R are different digits and R # 0.

A man completes 7/8 of a job in 21 days. How many more days will it take him to finish the job if quantum of work is further increased by 50%?

Consider all 3-digit numbers (without repetition of digits) obtained using three non-zero digits which are multiples of 3. Let S he their sum.

What is the value of X in the sequence 2, 12, 36, 80, 150, X?

Five friends P, Q, X, Y and 2 purchased some notebooks. The relevant information is given below

1. Z purchased 8 notebooks more than X did.