After interchanging the given two numbers and two signs what will be the values of equation (I) and (II) respectively?
– and ×, 6 and 4
 I. 7 × 6 + 8 ÷ 2 – 4
 II. 4 – 7 × 6 + 8 ÷ 2

The second number in the given number-pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number-pairs EXCEPT one. Find that odd number-pair.

Which letter-cluster will replace the question mark (?) to complete the given series?

ZXE ZWD ZVC ? ZTA

After interchanging the given two numbers and two signs what will be the values of equation (I) and (II) respectively?
 + and ×, 5 and 4
 I. 4 + 6 × 5 – 7 ÷ 1
 II. 5 × 3 – 4 + 8 ÷ 2

By Interchanging the given two numbers which of the following equation will be not correct?
 3 and 4

Directions: Study the given information carefully to answer the given question.

M, N, O, P, Q, R and Sare seven people live on seven different floors of a building but not necessarily in the same order. The lower most floor of the building is numbered 1, the one above that is numbered 2 and so on till the topmost floor is numbered 7. Each one of them have different income i.e. 3500, 15000, 7500, 9000,11000, 13500 and 5000. (But not necessarily in the same order.)

M lives on an odd-numbered floor but not on the floor numbered 3. The one who has income of 11000 lives immediately above M. Only two people live between M and the one who has income of 7500.

The one who has income of 15000 lives on one of the odd-numbered floors above P. Only three people live between O and the one who has income of 15000. The one who has income of 7500 livesimmediately above O. R earns 4000 more than Q. The one who has income of 3500 lives immediately above the one who has income of 5000.Only one person lives between N and Q. N lives on one of the floors above Q. Neither O nor M has income of 9000. Q does not has income of 7500.

Which of the following combinations is true with respect to the given arrangement?

Select the set in which the numbers are related in the same way as are the numbers of the following set.
 (56, 8, 15)
 (32, 16, 18)
 (NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding /deleting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed)

Directions: Study the given information carefully to answer the given question.

M, N, O, P, Q, R and Sare seven people live on seven different floors of a building but not necessarily in the same order. The lower most floor of the building is numbered 1, the one above that is numbered 2 and so on till the topmost floor is numbered 7. Each one of them have different income i.e. 3500, 15000, 7500, 9000,11000, 13500 and 5000. (But not necessarily in the same order.)

M lives on an odd-numbered floor but not on the floor numbered 3. The one who has income of 11000 lives immediately above M. Only two people live between M and the one who has income of 7500.

The one who has income of 15000 lives on one of the odd-numbered floors above P. Only three people live between O and the one who has income of 15000. The one who has income of 7500 livesimmediately above O. R earns 4000 more than Q. The one who has income of 3500 lives immediately above the one who has income of 5000.Only one person lives between N and Q. N lives on one of the floors above Q. Neither O nor M has income of 9000. Q does not has income of 7500.

If all the people are made to sit in alphabetical order from top to bottom, the positions of how many people will remain unchanged.