What is the units digit of the expression 14^716^4?
Options:
(A) 0
(B) 3
(C) 8
(D) 6
(E) 4

I think answer on this one should be C too. Since we know that 14^7>16^4, as Will said one should always check if the number is positive. So the answer is: (C).

The number N is 5,1H4, where H represents the ten's digit. If N is divisible by 9, what is the value of H?
Options:
(A) 1
(B) 3
(C) 8
(D) 7
(E) 9

Integer is divisible by 9 - Sum of digits is divisible by 9 So the answer is: (C).

A no. when divided by the sum of 555 and 445 gives 2times their difference as quotient & 30 as remainder. Find the no. is?
Options:
(A) 124345
(B) 234545
(C) 165767
(D) 144656
(E) 220030

(555 + 445) * 2 * 110 + 30 = 220000 + 30 = 220030 So the answer is: (E).

A motorcyclist goes from Bombay to Pune, a distance of 192 kms at an average of 32 kmph speed. Another man starts from Bombay by car 2 hours after the first, and reaches Pune hour earlier. What is the ratio of the speed of the motorcycle and the car?
Options:
(A) 1:2
(B) 1:5
(C) 1:3
(D) 1:1
(E) 1:7
T = 192/32 = 6 h
T = 6 - 3 = 3
Time Ratio = 6:3 = 2:1
Speed Ratio = 1:2 So the answer is: (A).