Loose smut in wheat can be effectively controlled

In the following question, select the missing number from the given series. 

142, 150, 123, 187, 62, ? 

Statements:

Some teachers are scientists.

All scientists are doctors.

All doctors are engineers.

Conclusions:

After arranging the given words according to dictionary order, which word will come at Third position?

1. Squire

2. Squib

Statement: Some ants are bees. Some bees are insects.

Conclusion:

i) Some ants are insects.

ii) All worms are bees.

Which of the following Venn diagram best represents the relationship between birds, animals and crows?

Which figure should replace the question mark (?) if the following series were to be continued?

What comes next in the series in place of ?-

X, T, P, L, ?