q: The average age of 11 boys is 50, if the average age of first six boys is 49 and that of the last six is 52. Find the boy age?
Options:
(A) 48
(B) 50
(C) 56
(D) 62
(E) 64
a: Stream of consciousness: 1 to 11 = 11 * 50 = 550
1 to 6 = 6 * 49 = 294
6 to 11 = 6 * 52 = 312
6th = 294 + 312 550 = 56 The answer is (C).

question: 16,25,36,72,144,196,225
Options:
(A) 36
(B) 196
(C) 225
(D) 144
(E) 72
answer: Stream of consciousness: Each of the numbers except 72 is a perfect squar The answer is (E).

q: A car finishes a journey in nine hours at the speed of 80 km/hr. If the same distance is to be covered in six hours how much more speed does the car have to gain?
Options:
(A) 8 km/hr
(B) 40 km/hr
(C) 12 km/hr
(D) 16 km/hr
(E) None of these
a: Stream of consciousness: Distance covered by the car = 80 9 = 720 km
\ Speed = 7206 = 120 km/hr
\ Speed gain = 120 80 = 40 km/hr The answer is (B).

question: Using all the letters of the word "THURSDAY", how many different words can be formed?
Options:
(A) 8
(B) 8!
(C) 7!
(D) 7
(E) 5
answer: Stream of consciousness: Total number of letters = 8
Using these letters the number of 8 letters words formed is P = 8!. The answer is (B).

q: A technician makes a round-trip to and from a certain service center by the same route. If the technician completes the drive to the center and then completes 10 percent of the drive from the center, what percent of the round-trip has the technician completed?
Options:
(A) 5%
(B) 10%
(C) 25%
(D) 40%
(E) 55%
a: Stream of consciousness: Assuming that the technician makes a round-trip of 40 miles (each way is 20 miles), then the technician would have completed 20 miles + 2 miles (10% of the remaining 20 miles). Therefore, the total is 22 miles. 22miles/40 miles is 55% of the entire trip. The answer is (E).

q: A 35 cm long wire is to be cut into two pieces so that one piece will be 2/5th of the other, how many centimeters will the shorter piece be?
Options:
(A) 10
(B) 20
(C) 88
(D) 77
(E) 14
a:
Stream of consciousness: 1: 2/5 = 5: 2
2/7 * 35 = 10 The answer is (A).