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) 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) 140 kms Explanation: It is given train X leave station A at 6:30 am, here it is asked to calculate the distance from A when the trains meet, theDistance traveled by train left at 6:30 am upto 7:40 am i.e. in 1 hr. 10 min. or 7/6 hours = 30 x 7/6 = 35 kmSo train leaving at 7:40 am will meet first train after covering a distance of 35 km. with relative speed of 40-30=10 km/hr.Hence time taken = 35/10 = 3.5 hours or 3 hours 30 minutesSo distance from A = Distance traveled by 2nd train in 3 hr. 30 min = 40 x 3.5 = 140 km.

Answer: C) 22 Explanation: In the given series,  2nd term = 1st term -82 = 888-82=440    3rd term = 2nd term -82=440-82=216   and so on...   Here 6th term = 5th term -82=48-82=20  Therefore, 22 is wrong.

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: A) Because it was thought to be the first computer so named with first alphabets of English Explanation:

Answer: D) 80 Explanation: There should be 90 instead of 80so we can have a series5, 5x3, 15x2, 30x3, 90x2, 180x3, 540x2 and 1080x3 and so on...

Answer: A) Carbohydrate Explanation: The iodine test is used to test for the presence of starch i.e, Carbohydrate.