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.

By interchanging the given two signs which of the following equation will be not correct?
 – and × 

A # B means ‘A is the sister of B’.
A @ B means ‘A is the son of B’.
A & B means ‘A is the father of B’.
A % B means ‘A is the mother of B’.
If W @ Q % T & Y @ M % K, then how is Q related to K?

By interchanging the given two signs and numbers which of the following equation will be correct?
 – and +, 6 and 3

Select the odd group of numbers. (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 /subtracting /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)

Option

Four clusters have been given out of which three are alike in some manner and one is different. Select the one that is different.

Option

Select the option that is related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term.
 25 :4 :: 64 : ? :: 225 :14

Which of the following numbers will replace the question mark (?) in the given series?
 10, 20 , 23, ?, 97, 582