If 1 is added to each even digit and 2 is subtracted from each prime digit in the number 73384563, then what is the sum of digits which is 4th and 6th from left and right respectively?

In the class of boys and girls, the rank of Obama is15th and the rank of Shabana is 8th.The rank of Obama is 8th only in boys and Shabana’s rank is 4th only in girls. In the boys and girls, Obama’s rank is 18th from other side. Shabana’s rank is 7th only in girls from other end. Then find the total number of boys in the class. 

Figure A is related to B in a certain pattern. Following the same pattern, figure C is related to D. Study the pattern and select the figure which should be placed in place of D.

Which of the following combination is not correct: - 

The speed of Duranto is more than the speed of Rajdhani. Shatabdi moves faster that GaribRath but slower than Rajdhani. Which one is the slowest?

If Ahmed travels towards North from his house, then to left, then to South covering equal distances in each direction to reach Sohan's house, In which direction is Ahmed's house now? 

Directions: In each of the following questions, there is a Assertion and a Reason, choose the correct alternative from the following-

Assertion (A) : The Indian Constitution came into force with effect from 26th January, 1950.
Reason (R): 26th January is celebrated as the Republic Day

In the following question, select the related letter/letters from the given alternatives.
PAL : RDP : : MRF  :  ?