The average of first 10 even numbers is?
Options:
(A) 18
(B) 16
(C) 15
(D) 11
(E) 19
Answer and stream of consciousness: (D)
Stream of consciousness: Sum of 10 even numbers = 10 * 11 = 110
Average = 110/10 = 11

If soundharya rows 49 km upstream and 77 km down steam taking 7 hours each, then the speed of the stream
Options:
(A) 6 kmph
(B) 5 kmph
(C) 2 kmph
(D) 3 kmph
(E) 4 kmph
Answer and stream of consciousness: (C)
Stream of consciousness: Speed upstream = 49/7 = 7 kmph
Speed down stream = 77/7 = 11kmph
Speed of stream = (11-7) = 2 kmph

When N is divided by 10 the remainder is 1 and when N is divided by 3 the remainder is 2. What is the remainder X when N is divided by 30?
Options:
(A) (a) 4
(B) (b) 7
(C) (c) 11
(D) (d) 13
(E) (e) 17
Answer and stream of consciousness: (C)
Stream of consciousness: N ends in the digit 1 because when N is divided by 10, the remainder is 1. Since N ends in 1, the remainder X when N is divided by 30 also ends in a 1. 11 is the only choice which ends in a 1.

Anmol can eat 27 pastries in a hour.
Aakriti can eat 2 pastries in 10 minutes.
Divya can eat 7 pastries in 20 minutes.
How long will it take them to eat a 420 pastries ?
Options:
(A) 2 hours.
(B) 1 hours.
(C) 5 hours.
(D) 4 hours.
(E) 7 hours.
Answer and stream of consciousness:
(E)
Stream of consciousness: In one hour, Anmol eats 27 pastries, Aakriti eats 12, and Divya eats 21. A total of 60 pastries. Therefore 420 pastries would take 420 60 = 7 hours.