Which two numbers and two signs should be interchanged in the following equation to make it correct? 

14 + 16 - 14 × 9 ÷ 4 = 61

Which two signs should be interchanged to make the given equation correct?
2 × 236 − 2 + 36 ÷ 72 = 200

Three of the following four options are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group?

(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.)

Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.

_TUVTR_WU_UXVN_Y

Select the triad in which the numbers are related in the same way as are the numbers of the given triads.

(8, 9, 7), (24, 13, 35)

(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)

In a certain code language, ‘LIGHT’ is coded as ‘25709’ and ‘SIGHT’ is coded as ‘97065’. What is the code for ‘S’ in that language?

61 is related to 18 following a certain logic. Following the same logic, 213 is related to 38. To which of the following is 509 related, following the same logic?

(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.)

Select the number from the given options to complete the series.

32, 36, 44, 56, 72, ___

What will come in place of the question mark (?) in the following equation, if ‘+’ and ‘-’ are interchanged and ‘×’ and ‘÷’ are interchanged?

125 ÷ 5 + 1809 × 9 - 14 = ?

XAB and XCD are two secants to a circle. If XA = 18 cm, AB = 22 cm and XC = 24 cm, then find the value of XD (in cm).

In a room, there are some chairs and some people. If on each chair, only one person is seated, then there is no chair for exactly one person. If on each chair, two persons sit, then there is one vacant chair. What is the number of chairs in the room?