Answer: C) X Explanation: first letter A with last letter Zsimilarly 2nd last letter Y with 2nd letter BNow 3rd letter C with 3rd last letter X4th last letter W with 4th letter D and so on.... Therefore the missing letter is X

Answer: B) 8 Explanation: Here given that 9 = 63, 8 = 48, 7=35, ...    The given question follows a pattern that 9 x (9 - 2) = 9 x 7 = 63 8 x (8 - 2) = 8 x 6 = 48 7 x (7 - 2) = 7 x 5 = 35   Similarly, 4 x (4 - 2) = 4 x 2 = 8.

Answer: C) 67 Explanation: Here the given number series is 3, 14, 36, 67, 113, 168 It follows a pattern that 3 3 + 1 x 11 = 3 + 11 = 14 14 + 2 x 11 = 14 + 22 = 36 36 + 3 x 11 = 36 + 33 = 69 69 + 4 x 11 = 69 + 44 = 113 113 + 5 x 11 = 113 + 55 = 168   Hence, the wrong number is 67.

Answer: C) 52 hrs 15 min Explanation: Since they can do 19 programs in 19 hours, Then 52 programs in 52 hours respectively.And a 15 min intervalTotal time they take to do 52 programs is 52 hours 15 minutes.

Answer: A) Sub-Saharan Africa Explanation:

Answer: B) Petrol Explanation:

Answer: C) TCP Explanation: Telnet uses TCP at layer 4. It uses IP at layer 3. We know that Telnet uses TCP/IP protocol, but in the question, it is asked specifically at layer 4 what is used in Telnet. So it is TCP at layer4 and IP at layer 3.

Answer: B) 60 yrs Explanation: Let the Father be x years when he died Average Age 10 years ago be A Total Age 10 years ago = 6*A Total Age after 10 years(Just before father's Death) = 6A + 6*10 = 6A + 60 Father Died and Baby was born => the Total number of people in the family is Same (6) Baby born today so age of baby = 0 (6A +60 - x)/6 = 6A/6 => A + 10 -(x/6) = A => x/6 = 10 => x = 60 Therefore we can conclude that the father was 60 years old when he died.