In each of the following questions, four numbers are given out of which three are like in some manner while one is different. Choose the one which is different from the rest three?

Three of the following four words are alike in a certain way and one is different. Select the odd word.

Read the given information carefully and answer the following questions.
Seven businesses and their own businesses are doing practice in different cities - Chennai, Bangalore, Hyderabad, Mumbai, Ahmedabad, Jaipur and Bhubaneswar, but not necessarily in this order. Each has a different profession, not necessarily in the same order on doctor, engineer, pharmacist, lawyer, counsellor, professor and artist.
A is a Pharmacist and practices in Bhubaneshwar D practices in Bangalore but is not a doctor or artist. Is a practicing professor in Hyderabad. G is a counsellor and does not practice in Mumbai or Chennai. E is a lawyer and practices in Ahmedabad. F practices in Chennai but is not an artist. C practices in Mumbai

Who is the doctor?

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
 21 * 3 * 36 * 2 * 23 = 68

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

In each of the following questions, five words are given. Which of them will come in the middle if all of them are arranged alphabetically as in a dictionary?

Directions: Study the following information to answer the given questions.
A, B, C , D , E , F and G are seated in a straight line facing North but not necessarily in the same order . Only three people sit between F and A. Neither F nor A sits at an extreme end of the line. Only two peoples it between A and G. E is not an immediate neighbour of either A or F. E sits third Due to left of B . B is not an immediate neighbour of A. E is not an immediate neighbour of C.  

What is the position of E with respect to C? 

Find the missing number in the given series.
1, 3, 9, 31, ___ 651